- Make note of the time on the system clock.
- Shut the machine down. Hard power it off when it freezes.
- Restart the machine.
cat /var/log/syslog >> ~/Desktop/syslog.txt
- Attach the file this creates on your Desktop to this thread.
- Let me know the time you recorded (first step)
You also might want to start considering a fresh install. If you have a hosed online upgrade: 1) there could be other things wrong that you've just not discovered yet; or 2) it could take a lot less time to install than figure it out. Just a heads up.