My Macbook Pro has been acting pretty strange lately... It started being very laggy and freezing up so I ran Disk Utility and found there were some errors when I verified the disk. So I popped in the install disc and repaired the errors. Yadda yadda.

My computer is running FINE now but every time I try to open a program, ANY program, the computer freezes and I get "the application has quit unexpectedly."

Running Snow Leopard btw...