Why do my applications keep crashing on Lion 10.7.3?

Solution 1:

Not sure if this apply to your case but I had the same problem till yesterday, my new MBP was crashing randomly while using possibly random applications. I have figured it out that its a hardware problem. I had upgraded my RAM from 4GB to 8GB and had a lot of 'invalid address' crashes. I had replaced my memory to the old chips and all is good.

Solution 2:

Yep, your problem sounds just like what a ton of others were having. Re-update using the combo update from the Apple Web site, and that should cure what ails you. Do Not redo your update using your Apple's built-in Software Update.