Regardless of our apelike fanboy lust for Valve's most recent release The Orange Box we have to admit there are some minor problems. Even near godlike releases have bugs that require a fix post-release, thankfully, the people at Valve recognize that fact and are planning an update to fix some of the problems reported with Team Fortress 2.
The patch will fix numerous bugs in the game including bandwidth issues, stats reporting, menu enhancements and exploit fixing. Valve investigated the issues after reading forums posts made by Team Fortress 2 players, showing Valve to be every ounce the incredibly awesome game studio we've always known them to be.
In addition to patching purported problems, Valve is at work on new maps which don't as yet have a release date. The patch has already been submitted to Microsoft and will most likely see release before Christmas.