How to resolve TV glitching in Media Center 2005 on dual core AMD computers
Some customers have been reporting TV glitching issues in Media Center 2005, and Dave Fleischman has narrowed down one of the root causes to be an issue with dual core AMD systems. He got a hold of one of these machines and was able to easily reproduce the issue, and further research showed that the problem affected other applications (specifically, games) and not just Media Center. Fortunately AMD has released a processor update pack on their hotfix website to address this issue. If you are running into this issue, you will want to download and apply this update for the dual core processor from that site.