I am new to Mac. Infact the one I am on now is my first. It is an imac g3. I bought with os 8.6 with 32 mb of ram. I build Windows XP PC's all the time. so I thought (I can figgre out a mac) and I have....somewhat. The mac is now got 256 BM of ram and running os 10.2.8. I told you all of that to say I to had the (programs unexpectedly quit problem) and to say I found a fix. This is very easy. Create a new profile, give it Admin wrights, then log in to that account and see if all is well. If all is well you can deaete the old account. It worked for me. I hope it works for you.