I was able to get LinuxMCE installed with UI2 using the proprietary NVIDIA drivers. Everything seems to work OK except MythTV. When I select TV, the grey MythTV background comes up, and orange loading bar scrolls past a few times, then the system freezes on the grey MythTV background. Ctrl+Alt+F1..12 doesn't even work and the system has to be rebooted. The same thing happens when I just select MythTV setup from the start menu in KDE without LinuxMCE running. I know the computer is capable of running MythTV because it worked with an older Pluto installation. I don't have the exact specs on me at the moment, but what I do know is:
DELL
CPU: P4
Capture card: PVR-150
Graphics: NVIDIA Bladerunner
KDE + LinuxMCE 704
Thanks for any help.
-RobB