I have 2 versions og Premiere Pro installed on a WinXP SP3 system.
Premiere Pro 2.0
Premiere Pro 4.1.0
When I play 1x a straight DV movie from a sequence, which shows in the monitor window, I get CPU loads of 60-80% with 4.1.0 and 20-25% with 2.0. On top of it, 4.1.0 crashes from time to time, I believe due to too high load. The error is C++ related (can't recall exactly what it says). Again, all on the same system with the same Premiere video settings.
What's wrong with 4.1.0 that this straight play produces crashes?
First update to 4.2.1, then try again.
The high CPU was gone, the crashes (so far) and also a memory leak (which I didn't mention in my initial post).