So booting into 'safe-mode' and re-installing the AMD Driver did resolve the black screen issue, but then I found other things that didn't work, that did before updating ATI...so I decided to just re-install 2.6.3-
After re-installing 2.6.3, the same issues appeared, leading me to conclude that updating via 'Update Manager' breaks linux on my pc-
I think I fixed everything, but even though ATI looks like it's installed and seems to be working, 'Hardware Drivers' reports that '
NO proprietory drivers are in use in this system'-
I checked 'FGLRX' in Terminal, and got:
pc@PC1:~$ fglrxinfo
display: :0.0 screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: ATI Radeon HD 4800 Series
OpenGL version string: 3.3.11251 Compatibility Profile Context
ATI Catalyst information reports 'Catalyst Version' is 11.11-
I can configure 'Extra' Visual Effects in 'Appearance Preferences' successfully-
EDIT: If it ain't broke, don't fix it-