I have this exact problem on my new unit. It started out black, but has now changed to white, and it is on the left hand side of the screen.
Anyone have any tips on a way to fix this or do I need to send it back for a new screen?
Edit / I should add that mine is about 1cm from the left side...
Errr well for me with the latest version of Mupen, nomatter what I do with the config file and what speed I run my Pandora at, Super Mario 64 is totally unplayable. Add to the list Waverace, any of the Zeldas and Martiokart if your wondering.
As soon as I change the pnd to R1B5 I can play at...