Possible Duplicate:
What should I do when Ubuntu freezes?
Since the very beginning after I installed Ubuntu 12.04, it has been experiencing random crashes.
Sometimes it's the disk-utility, sometimes the qbittorrent, sometimes x11, other times it's apport, and many a times it's compiz.
Probing further on the crash, sometimes I get a message that some of my packages are out of date, which I update but some of them are already to the latest version.
Any fixes for this issue?