My iChat was messed up on my MacBook and unexpectedly quit every time I opened it. I called Apple and this is what they had me do... 1. Restart Computer and try iChat (no dice) 2. Uninstall iChat, put in Install Disc 1, optional install, install iChat (no dice) 3. Uninstall iChat, plists, and packages, put in Install Disc 1, restart, hold c, optional install, install iChat (no dice) 4. Create new "test" account, try iChat (no dice) 5. Restart, hold c, disc utility, verify Macintosh HD (HD passed, but iChat still didn't work) 6. Archive and Install Mac OS X. I am very weary about this because I don't want to lose the things I have on my MacBook. I am actually in the process of reinstalling OS X, not quite ready to actually do it but only a few steps away. If there is any other possible solutions, please tell me. If you need any other info, please say so. Note: I have a Time Machine backed up external HD, but I only backed up my whole HD once. If you need the specs, my signature shows them. Thanks.