Are you using any different/better "player" to play your rendered files? Im using Microsoft Media Player 7 and don't like it that much. Is there a better player with good codec support... ?
I was using CyberLink's PowerDVD for a while to watch MPEG files. It worked really really well until i tried watching a widescreen project i had created with dimensions of 720x244. It played the file at 4:3 anyway (making everyone VERY tall and skinny). Now when i try to use it for anything, it shifts to full screen mode and crashes the computer dead. I just haven't taken the time to uninstall & reinstall it yet. For that matter, i have to go find the original disc with the installation code printed on the sleeve. I never wrote that code down on the backup copy i burned. Oops.