I’m having the same issue and it’s annoying as hell. I’m running a dual core 3ghz machine with 4gb of memory. Quicktime is 7.2.
I’m using Adobe CS 3 Professional, but it’s on a work computer and I’m not sure of it’s sketchy origins. Possibly this has something to do with the malfunction? ? ?
I wanted to let you know your not the only one hit by this issue. If you find a fix, let us know! I have project deadline fast approaching and it’s tough to show a file with bad freeze frames.