I just tried logging into Unity after todays updates and it seems to be working fine so far. I'm using nvidia-current installed from edgers/ppa ftw.
Intel ® P4 Extreme Edition 3.4 (Gallatin) || DFI ® LanParty PRO875B rev B1
Crucial ® Ballistix Tracer PC4000 1GB || Mountain Mods U2-UFO Opti-1203
XFX 7600GT 560M AGP (PV-T73A-UDF3) || Corsair HX520W Modular PSU
All good now with the new driver