I can't shut down VirtualDub whenever it locks up (only happens when I try opening a video file with audio sync issues). I use WinXP and can shut down the application window, but when I check the processes tab VDub is still running, I can try to end the process but it still wont shut down, and I can shut down other processes just fine. Also when VDub locks up my whole computer goes into slow-mo... like the matrix, it takes 5 seconds to open up my start menu. When I look at the System Idle Process its at 98 and Vdub is taking up 9mb of Mem usage, but when I go to the performance tab, Im using up 430mb (out of 512mb) and my cpu usage stays at around 5% I am currently using VDub 1.5.4