Video and sound out of sync

Hello,
There is some posts about this but I am not in the same boat as the others.
In iMovie HD the video will play for a second -with an acceptable amount of studder. then as soon as I stop it the first time the video gets one click from stoping totaly but the audio keeps going. Then it stops. if I try to play again it just loops the problem. There is no extracted audio and I have enough mem and prosseor power. Any thoughts. Oh yea the project is on the boot disc. Another user on the same comp is having the exact same problem.
thanks
-Ram

My standard list of things to do first for these wierd sort of problems, but I also tend to run these before I go to burn an iDVD project just to be safe. Keep in mind this list represents the programs I tend to use. There are several alternate programs that do the same things with some combining the functions of some of the ones below. So everyone has their favorites, but here are mine...
Run MacJanitor (free download) to do all the Unix Cron Maintenance scripts.
Run Disk Utility (Applications -> Utilities) and repair disk permissions on your start up drive (typically your internal drive). Also verify any other drives mounted on the system, especially any external drives that you use for iMovie and iDVD projects.
Run Preferential Treatment (free download) to check for corrupt/damaged application and system preference files.
Run Cache Out X (free download) to clear all system and application caches.
Reboot your Mac (after running Cache Out X you are given the option to restart the machine).
If you still can not get it to run correctly, next thing to try is to throw out the iMovie preference file (don't forget to change back those preferences you want different from the defaults next time you run it). If it still doesn't work, then I would suggest you reinstall iMovie.
Patrick

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