Hello, i’m facing similar problem.
Encore CS4
Windows 7 Final (build 7600)
Asus P5Q
Intel Q6600
2GB DDR2
ATI Radeon HD4850
When importing a MPEG-2 file as timeline, it freezes everything at the point the music seems to be ralentized (but stil playing, slowly) and cant move the mouse or open the task manager.
The video is 1 hour and 10 mins long and weighs 4GB. I didnt tried many thing because is very frustrating to hard reset the machine every time it freezes.
Has anyone else tried to do thi with Windows 7? Or its a solved problem on W7 and im facing another problem?