Is Some Button Stuck? Have Weird Issues In Some Programs

[Esn]

List of issues:
In every browser, i.e. Chromium, Firefox, clicking on a link will open up that link in the same tab AND open up a new tab with that link. If I click on any tab, that tab closes instead of coming to the forefront. Right-clicking in any place where text can be written will bring up the "paste" command (what normally happens when you press ctrl+v).

Using hotfix4.

Any ideas? I'm thinking ctrl (or R-button) may have something to do with it... or maybe r-nub, since it doesn't happen if I click on a link by pressing "enter".

EDIT: also, it was fixed after a reboot... But does anyone know why it happened in the first place? It's not the first time I've had this problem. I think in past instances also, it usually happened after my Pandora had been on for a while.

 

[Esn]

I had it happen again. It tends to happen after my system has been on for a while, and is fixed by rebooting. Has anyone else had something like this?

 

[Chaser]

I've had the weird closure of tabs issue before but again it just clears itself, usually just by relaunching the app in my case. So no idea as to the cause.