Since updating to OS X's 10.3.5 I get a hard freeze consistently 10 to 20 seconds into the online games.
Can't force quit the game or anything else. Though the sound tells me I'm still getting pounded. And I can hit the spacebar and hear myself being re-spawned.

Anyone else have this problem?

Also happens to me except I havent gotten any update and im on windows xp I also get a freeze and my tt force turns off

Try running the following app (for Windows and OSX both):

http://www.realtech-vr.com/glview/

Choose save from the file menu and email the resulting file to support at bravetree dot com.

I have 10.3.5, nothing seems the matter with me. Must be a problem with your computer?

Check out Open GL profiler in the developer tools folder.

OpenGL profiler lets you run Open GL apps with different video cards (in a sense). If you have a nVidia GeForce2 and want to run ThinkTanks with a Radeon 9700 pro video card, just select it from the list and lauch ThinkTanks (from OpenGL profiler). It actually tells ThinkTanks that you're running a different video card, when in fact you're not. ;) If you want to find out what the problem is with your video card, select it from the list of video cards and look at the log after you quit ThinkTanks. Hope this helps!
-Spark#22