"I DON'T KNOW WHAT TO DO!!!
the freezes continue, is there no solution?!?!?
in the begining of this thread i said that when it freezes there is a
message about the pulse audio failure in system log. but now there are no
messages and the freezes continue.
Is there some kind of diagnostic I can do to isolate the problem????

I'm really getting tired from this Ubuntu freezes, and I'm afraid that all
these hard boots will damage my hardware."

#8 at
http://ubuntuforums.org/showthread.php?t=964962