It's also possible your USB host has already crashed. Plugging in a USB1.1 device (and possibly even some actual 2.0 devices, maybe, I dunno) causes the USB host inside the processor to crash, and the only way to recover is to do a complete reset. Do that, and then try the newest, I guess. Along with dmesg output, we should be able to see what's what.
w_ep 12tx, max 512
[ 9.738403] musb_hdrc: hw_ep 12rx, max 512
[ 9.738433] musb_hdrc: hw_ep 13tx, max 512
[ 9.738433] musb_hdrc: hw_ep 13rx, max 512
[ 9.738433] musb_hdrc: hw_ep 14shared, max 1024
[ 9.738464] musb_hdrc: hw_ep 15shared, max 1024
[ 9.738494] musb_hdrc: USB OTG mode controller at d80ab000 using PIO, IRQ 92
[ 9.758148] Bluetooth: Core ver 2.13
[ 9.758453] NET: Registered protocol family 31
[ 9.758483] Bluetooth: HCI device and connection manager initialized
[ 9.758483] Bluetooth: HCI socket layer initialized
[ 9.759948] NET: Registered protocol family 2
[ 9.765747] Switched to high resolution mode on CPU 0
[ 9.828430] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 9.828979] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[ 9.829223] TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
[ 9.829345] TCP: Hash tables configured (established 8192 bind 8192)
[ 9.829376] TCP reno registered
[ 9.851837] NET: Registered protocol family 1
[ 9.852569] NetWinder Floating Point Emulator V0.97 (double precision)
[ 9.854217] VFS: Disk quotas dquot_6.5.1
[ 9.854339] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 9.854888] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 9.857025] aufs 2-27
[ 9.857086] msgmni has been set to 485
[ 9.857330] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[ 9.857360] io scheduler noop registered
[ 9.857391] io scheduler anticipatory registered (default)
[ 9.857391] io scheduler deadline registered
[ 9.857543] io scheduler cfq registered
[ 9.867919] Serial: 8250/16550 driver4 ports, IRQ sharing enabled
[ 9.888793] serial8250.0: ttyS0 at MMIO 0x49020000 (irq = 74) is a ST16654
[ 9.888824] console [ttyS0] enabled
[ 10.333709] brd: module loaded
[ 10.339080] loop: module loaded
[ 10.342437] set_opp: OPP 3 set
[ 10.345581] pndctrl loaded.
[ 10.348510] usbcore: registered new interface driver asix
[ 10.354064] usbcore: registered new interface driver cdc_ether
[ 10.360046] usbcore: registered new interface driver rndis_host
[ 10.366027] i2c /dev entries driver
[ 10.370605] input: power-button as /devices/virtual/input/input0
[ 10.398712] triton2 power button driver initialized
[ 10.404785] Driver 'sd' needs updating - please use bus_type methods
[ 10.411407] omap2-nand driver initializing
[ 10.416687] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xbc (Micron NAND 512MiB 1,8V 16-bit)
[ 10.425842] cmdlinepart partition parsing not available
[ 10.431121] Creating 5 MTD partitions on "omap2-nand":
[ 10.436309] 0x00000000-0x00080000 : "xloader"
[ 10.441253] 0x00080000-0x00260000 : "uboot"
[ 10.446472] 0x00260000-0x00280000 : "uboot-env"
[ 10.451293] 0x00280000-0x00c80000 : "boot"
[ 10.459808] 0x00c80000-0x20000000 : "rootfs"
[ 10.671173] UBI: attaching mtd4 to ubi0
[ 10.675079] UBI: physical eraseblock size: 131072 bytes (128 KiB)
[ 10.681396] UBI: logical eraseblock size: 129024 bytes
[ 10.686828] UBI: smallest flash I/O unit: 2048
[ 10.691589] UBI: sub-page size: 512
[ 10.696258] UBI: VID header offset: 512 (aligned 512)
[ 10.702117] UBI: data offset: 2048
[ 11.950256] UBI: attached mtd4 to ubi0
[ 11.954101] UBI: MTD device name: "rootfs"
[ 11.959197] UBI: MTD device size: 499 MiB
[ 11.964202] UBI: number of good PEBs: 3990
[ 11.968963] UBI: number of bad PEBs: 6
[ 11.973449] UBI: max. allowed volumes: 128
[ 11.978088] UBI: wear-leveling threshold: 4096
[ 11.982818] UBI: number of internal volumes: 1
[ 11.987335] UBI: number of user volumes: 1
[ 11.991790] UBI: available PEBs: 0
[ 11.996276] UBI: total number of reserved PEBs: 3990
[ 12.001312] UBI: number of PEBs reserved for bad PEB handling: 39
[ 12.007415] UBI: max/mean erase counter: 11/3
[ 12.011840] UBI: image sequence number: 1833563728
[ 12.016693] UBI: attaching mtd3 to ubi1
[ 12.020568] UBI: physical eraseblock size: 131072 bytes (128 KiB)
[ 12.026885] UBI: logical eraseblock size: 129024 bytes
[ 12.032348] UBI: smallest flash I/O unit: 2048
[ 12.037078] UBI: sub-page size: 512
[ 12.041748] UBI: VID header offset: 512 (aligned 512)
[ 12.047637] UBI: data offset: 2048
[ 12.054443] UBI: background thread "ubi_bgt0d" started, PID 29
[ 12.096862] UBI: attached mtd3 to ubi1
[ 12.100646] UBI: MTD device name: "boot"
[ 12.105621] UBI: MTD device size: 10 MiB
[ 12.110534] UBI: number of good PEBs: 80
[ 12.115081] UBI: number of bad PEBs: 0
[ 12.119598] UBI: max. allowed volumes: 128
[ 12.124237] UBI: wear-leveling threshold: 4096
[ 12.128967] UBI: number of internal volumes: 1
[ 12.133483] UBI: number of user volumes: 1
[ 12.137939] UBI: available PEBs: 0
[ 12.142425] UBI: total number of reserved PEBs: 80
[ 12.147247] UBI: number of PEBs reserved for bad PEB handling: 2
[ 12.153320] UBI: max/mean erase counter: 6/4
[ 12.157623] UBI: image sequence number: 857520110
[ 12.162384] usbmon: debugfs is not available
[ 12.167083] ehci-omap ehci-omap.0: OMAP-EHCI Host Controller
[ 12.173065] ehci-omap ehci-omap.0: new USB bus registered, assigned bus number 1
[ 12.180877] ehci-omap ehci-omap.0: irq 77, io mem 0x48064800
[ 12.186614] UBI: background thread "ubi_bgt1d" started, PID 30
[ 12.195312] ehci-omap ehci-omap.0: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004
[ 12.203338] usb usb1: configuration #1 chosen from 1 choice
[ 12.209106] hub 1-0:1.0: USB hub found
[ 12.212982] hub 1-0:1.0: 3 ports detected
[ 12.321075] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 12.327911] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 12.335205] usb usb1: Product: OMAP-EHCI Host Controller
[ 12.340576] usb usb1: Manufacturer: Linux 2.6.27.46-omap1 ehci_hcd
[ 12.346832] usb usb1: SerialNumber: ehci-omap.0
[ 12.351501] Initializing USB Mass Storage driver...
[ 12.356536] usbcore: registered new interface driver usb-storage
[ 12.362640] USB Mass Storage support registered.
[ 12.367401] usbcore: registered new interface driver libusual
[ 12.373443] mice: PS/2 mouse device common for all mice
[ 12.399230] input: gpio-keys as /devices/platform/gpio-keys/input/input1
[ 12.469421] input: keypad as /devices/platform/i2c_omap.1/i2c-adapter/i2c-1/1-004a/twl4030_keypad/input/input2
[ 12.525054] input: nub0 as /devices/platform/i2c_omap.3/i2c-adapter/i2c-3/3-0066/input/input3
[ 12.578735] input: nub1 as /devices/platform/i2c_omap.3/i2c-adapter/i2c-3/3-0067/input/input4
[ 12.633453] twl4030_rtc twl4030_rtc: rtc core: registered twl4030_rtc as rtc0
[ 12.643829] bq27x00-battery 3-0055: support ver. 1.1.0 enabled
[ 12.649810] Bluetooth: HCI UART driver ver 2.2
[ 12.654266] Bluetooth: HCI H4 protocol initialized
[ 12.659118] Bluetooth: HCILL protocol initialized
[ 12.663909] hci_h4p hci_h4p: Registering HCI H4P device
[ 12.820953] mmci-omap mmci-omap.0: Failed to get debounce clock
[ 12.929931] mmci-omap mmci-omap.1: Failed to get debounce clock
[ 12.931030] mmci-omap mmci-omap.2: Failed to get debounce clock
[ 12.931457] Registered led device: pandora::sd1
[ 12.936126] Registered led device: pandora::sd2
[ 12.940826] Registered led device: pandora::bluetooth
[ 12.946044] Registered led device: pandora::wifi
[ 12.951019] Registered led device: pandora::keypad_bl
[ 12.956298] Registered led device: pandora:
ower
[ 12.961395] Registered led device: pandora::charger
[ 12.966522] usbcore: registered new interface driver usbhid
[ 12.972167] usbhid: v2.6:USB HID core driver
[ 12.976715] Advanced Linux Sound Architecture Driver Version 1.0.17.
[ 12.983306] ASoC version 0.13.2
[ 12.986663] OMAP3 Pandora SoC init
[ 12.990234] TWL4030 Audio Codec init
[ 12.995483] asoc: twl4030 <-> omap-mcbsp-dai-0 mapping ok
[ 13.002410] asoc: twl4030 <-> omap-mcbsp-dai-1 mapping ok
[ 13.015472] ALSA device list:
[ 13.018524] #0: omap3pandora (twl4030)
[ 13.022735] TCP cubic registered
[ 13.026031] NET: Registered protocol family 17
[ 13.030517] NET: Registered protocol family 15
[ 13.035064] Bluetooth: L2CAP ver 2.11
[ 13.038726] Bluetooth: L2CAP socket layer initialized
[ 13.043884] Bluetooth: SCO (Voice Link) ver 0.6
[ 13.048461] Bluetooth: SCO socket layer initialized
[ 13.053558] Bluetooth: RFCOMM socket layer initialized
[ 13.058807] Bluetooth: RFCOMM TTY layer initialized
[ 13.063720] Bluetooth: RFCOMM ver 1.10
[ 13.067504] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 13.072875] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 13.079376] RPC: Registered udp transport module.
[ 13.084106] RPC: Registered tcp transport module.
[ 13.088928] ThumbEE CPU extension supported.
[ 13.093261] Disabling unused clock "sr2_fck"
[ 13.093261] Disabling unused clock "sr1_fck"
[ 13.093292] Disabling unused clock "mcbsp_fck"
[ 13.093292] Disabling unused clock "mcbsp_fck"
[ 13.093322] Disabling unused clock "mcbsp_fck"
[ 13.093322] Disabling unused clock "mcbsp_ick"
[ 13.093322] Disabling unused clock "mcbsp_ick"
[ 13.093353] Disabling unused clock "mcbsp_ick"
[ 13.093353] Disabling unused clock "gpt2_ick"
[ 13.093383] Disabling unused clock "gpt3_ick"
[ 13.093383] Disabling unused clock "gpt4_ick"
[ 13.093414] Disabling unused clock "gpt5_ick"
[ 13.093414] Disabling unused clock "gpt6_ick"
[ 13.093444] Disabling unused clock "gpt7_ick"
[ 13.093444] Disabling unused clock "gpt8_ick"
[ 13.093444] Disabling unused clock "gpt9_ick"
[ 13.093475] Disabling unused clock "wdt3_ick"
[ 13.093475] Disabling unused clock "wdt3_fck"
[ 13.093505] Disabling unused clock "gpio2_dbck"
[ 13.093505] Disabling unused clock "gpio3_dbck"
[ 13.093536] Disabling unused clock "gpio5_dbck"
[ 13.093536] Disabling unused clock "gpt9_fck"
[ 13.093566] Disabling unused clock "gpt8_fck"
[ 13.093566] Disabling unused clock "gpt7_fck"
[ 13.093597] Disabling unused clock "gpt6_fck"
[ 13.093597] Disabling unused clock "gpt5_fck"
[ 13.093627] Disabling unused clock "gpt4_fck"
[ 13.093627] Disabling unused clock "gpt3_fck"
[ 13.093658] Disabling unused clock "gpt2_fck"
[ 13.093658] Disabling unused clock "gpt1_ick"
[ 13.093688] Disabling unused clock "wdt1_ick"
[ 13.093688] Disabling unused clock "wdt2_ick"
[ 13.093719] Disabling unused clock "wdt2_fck"
[ 13.093719] Disabling unused clock "gpio1_dbck"
[ 13.093750] Disabling unused clock "gpt1_fck"
[ 13.093750] Disabling unused clock "cam_ick"
[ 13.093750] Disabling unused clock "cam_mclk"
[ 13.093780] Disabling unused clock "des1_ick"
[ 13.093780] Disabling unused clock "sha11_ick"
[ 13.093811] Disabling unused clock "rng_ick"
[ 13.093811] Disabling unused clock "aes1_ick"
[ 13.093872] Disabling unused clock "ssi_ick"
[ 13.093872] Disabling unused clock "mailboxes_ick"
[ 13.093902] Disabling unused clock "mcbsp_ick"
[ 13.093902] Disabling unused clock "mcbsp_ick"
[ 13.093933] Disabling unused clock "gpt10_ick"
[ 13.093933] Disabling unused clock "gpt11_ick"
[ 13.093933] Disabling unused clock "uart2_ick"
[ 13.093963] Disabling unused clock "i2c_ick"
[ 13.093963] Disabling unused clock "hdq_ick"
[ 13.093994] Disabling unused clock "mspro_ick"
[ 13.093994] Disabling unused clock "des2_ick"
[ 13.094024] Disabling unused clock "sha12_ick"
[ 13.094024] Disabling unused clock "aes2_ick"
[ 13.094024] Disabling unused clock "icr_ick"
[ 13.094055] Disabling unused clock "pka_ick"
[ 13.094055] Disabling unused clock "ssi_ssr_fck"
[ 13.094085] Disabling unused clock "hdq_fck"
[ 13.094085] Disabling unused clock "uart2_fck"
[ 13.094116] Disabling unused clock "mcbsp_fck"
[ 13.094116] Disabling unused clock "mcbsp_fck"
[ 13.094146] Disabling unused clock "i2c_fck"
[ 13.094146] Disabling unused clock "mspro_fck"
[ 13.094177] Disabling unused clock "gpt11_fck"
[ 13.094177] Disabling unused clock "gpt10_fck"
[ 13.094207] Disabling unused clock "iva2_ck"
[ 13.094207] Disabling unused clock "dpll4_m6x2_ck"
[ 13.094238] Disabling unused clock "dpll4_m5x2_ck"
[ 13.094238] Disabling unused clock "dpll3_m3x2_ck"
[ 13.094268] Disabling unused clock "sys_clkout1"
[ 13.094299] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 1
[ 13.133361] Console: switching to colour frame buffer device 100x30
[ 13.224273] mmc0: host does not support reading read-only switch. assuming write-enable.
[ 13.232452] mmc0: new SD card at address e624
[ 13.237335] mmcblk0: mmc0:e624 SU02G 1985024KiB
[ 13.242279] mmcblk0: p1
[ 13.322662] twl4030_rtc twl4030_rtc: setting system clock to 2011-05-17 18:39:14 UTC (1305657554)
[ 13.431518] UBIFS: mounted UBI device 0, volume 0, name "rootfs"
[ 13.437652] UBIFS: file system size: 507838464 bytes (495936 KiB, 484 MiB, 3936 LEBs)
[ 13.445739] UBIFS: journal size: 9033728 bytes (8822 KiB, 8 MiB, 71 LEBs)
[ 13.453094] UBIFS: media format: w4/r0 (latest is w4/r0)
[ 13.459014] UBIFS: default compressor: lzo
[ 13.463134] UBIFS: reserved for root: 0 bytes (0 KiB)
[ 13.469818] VFS: Mounted root (ubifs filesystem).
[ 13.474700] Freeing init memory: 148K
[ 13.498352] mmc1: host does not support reading read-only switch. assuming write-enable.
[ 13.506561] mmc1: new SD card at address b2bc
[ 13.511474] mmcblk1: mmc1:b2bc SU02G 1985024KiB
[ 13.516448] mmcblk1: p1
[ 20.633209] ads7846 spi1.0: touchscreen, irq 254
[ 20.638458] input: touchscreen as /devices/platform/omap2_mcspi.1/spi1.0/input/input5
[ 25.334228] FAT: bogus number of reserved sectors
[ 25.339080] VFS: Can't find a valid FAT filesystem on dev mmcblk1.
[ 25.385681] FAT: bogus number of reserved sectors
[ 25.390502] VFS: Can't find a valid FAT filesystem on dev mmcblk0.
[ 25.711120] FAT: bogus number of reserved sectors
[ 25.715850] VFS: Can't find a valid FAT filesystem on dev mmcblk1.
[ 25.732604] FAT: bogus number of reserved sectors
[ 25.737426] VFS: Can't find a valid FAT filesystem on dev mmcblk0.
[ 26.911376] NET: Registered protocol family 10
[ 27.147521] UBIFS: mounted UBI device 1, volume 0, name "boot"
[ 27.153472] UBIFS: file system size: 8386560 bytes (8190 KiB, 7 MiB, 65 LEBs)
[ 27.160858] UBIFS: journal size: 1032193 bytes (1008 KiB, 0 MiB, 6 LEBs)
[ 27.168151] UBIFS: media format: w4/r0 (latest is w4/r0)
[ 27.174041] UBIFS: default compressor: lzo
[ 27.178161] UBIFS: reserved for root: 396117 bytes (386 KiB)
[ 28.007934] dpll1_ck rate: 600000000
[ 28.011566] arm_fck rate: 600000000
[ 28.015167] PLL_MPU rate: 600000000
[ 28.078826] input: nub0 as /devices/platform/i2c_omap.3/i2c-adapter/i2c-3/3-0066/input/input6
[ 28.305419] input: nub1 as /devices/platform/i2c_omap.3/i2c-adapter/i2c-3/3-0067/input/input7
[ 50.021820] aufs test_add:243:mount[1208]: uid/gid/perm /mnt/pnd/op_switchgui 1000/1000/0755, 0/0/0777
[ 78.547027] hub 1-0:1.0: unable to enumerate USB device on port 2
[ 171.092468] keyboard.c: can't emulate rawmode for keycode 191
[ 171.257629] keyboard.c: can't emulate rawmode for keycode 191
[ 209.453948] keyboard.c: can't emulate rawmode for keycode 185
[ 209.637695] keyboard.c: can't emulate rawmode for keycode 185