I disagree, I have 9.0a and have major problems.
The only way i can get a successful export is using stereo aac and main concept mp4 video. Anything else results in a file where the video plays ok for a bit then goes slow then really fast and its out of sync.
I have tried loads of different settings etc and cant sort it.
Any advice??
By the way I have a panasonic sd20 camcorder and am running vegas pro 9.0a on vista 64 bit.