My Windows Media Player freezes when playing MPG files. I noticed it's not all files, anything I capture I can play fine. But sometimes other MPG files I have will play fine, and other times they'll freeze in the middle of the video. When they freeze, the video is frozen but the audio continues to play. The only way to get the video working again is to close the player and reopen it. I've tried uninstalling it and reinstalling it, no luck. I've also tried going down from version 7 to 6, with no luck, both stall. Here's my setup:

AMD 900 Mhz, 256 Ram, 20 Gig 7200 and 60 Gig 7200 Hard Drives
ATI AIW 32 Meg Video Card, etc etc

Pretty much, my system should NOT be having this problem. Any suggestions on how to fix this? Anyone else ever have this problem?