Hmmm.. Again, I was having a lot of trouble with that when I used the EMUTOS bios. I only run in the lower resolution with the zoom setting enabled. I think its related to the TOS file since that is what fixed it for me.

Is it illegal to post the TOS file? If it isn't, I can attach the one that I have been using. I can't remember where I got it, but it gives me no mouse problems thus far. I'm using an N810