What is causing my application crashes? Borderlands 2, Adium, more Borderlands 2 (purchased, downloaded, run via Steam) crashes on launch for me. This is the first time I've ever really had application crashes, other than the typical "Application has quit unexpectedly" line. I do get a crashlog, which I've put into pastebin here:

http://pastebin.com/bKgKLJv0

I have no idea where to start. help?
With regards to Borderlands 2, there is a thread on the Steam Community with a similar crash log, and the solution appears to be updating to Mavericks, with a few people confirming it worked for them.