I'm currently at 7680x1080
It's not workable like this though, there is simply not enough room on my desk, and I am sick of turning my head - and so the 32" will be relegated back to xbox duty. I'll still have the three 23"'s though.
There is also a problem with switching fullscreen video, I only want one screen to display it (so I can keep working on another screen) and sometimes I get nasty random garbage displayed on the non-video screens that takes a hard reboot to fix.
So much for progress lol
Edit - a firmware update on the displayport/vga adapter seems to have fixed this - yay!