Comment 4 for bug 50683

Well, guys, I don't know what to say.
I now have a fully working, up-to-date system.

I took the following steps (as well as the ones mentioned above):
Removed xserver-xorg-driver-all and xserver-xorg-driver-i810 (and a lot of other drivers).
Upgraded xserver-xorg-core to latest.
Upgraded xserver-xorg-driver-ati to latest.
Upgraded xserver-xorg to latest.

The only other thing I did was remove and replace the memory and wifi card and completely removed the conexant modem.

This doesn't really resolve the cause of all the problems, but I no longer seem to be affected.

Cheers