Pro Tools 9 keep jumping to end of Mix/Edit screen

[redbull]

I have a very annoying problem that started yesterday and I can't track down the reason.

Every 10 seconds or so, whether on the Edit or Mix screen, the page will just jump right to the end..so in the case of the Mix screen it will jump all the way to the right, and in the case of the Edit screen jump all the way to the bottom.

Even if I'm in the middle of holding a fader down, it will still jump. Very annoying.

I'm 99% sure it has nothing to do with my mouse, doesn't happen in any other program, and the fact it jumps vertically as well as horizontally rules the mouse out I think.

The track at the very end of the session I'm working on has a blue box around it's name, I have a feeling this might have something to do with it, but having never seen it before I can't figure it out! Probably something obvious I've done accidentally...can anybody help?

[PD-John]

Because of the blue box comment, I'm taking a wild guess... Check that there's no controller selected under Setup > Peripherals > MIDI Controllers (set all the "Type" menus to "None" unless of course you use a controller).

[redbull]

Yes the problem turned out to be my M-audio USB keyboard. I've never had a problem with it before, but disconnecting it sorted it out. Thanks for the reply.