Hmm... improper cooling/overheating can cause such problems, yes. But so can other (software) issues. Here's some general info on CPUs and thermal/cooling:
http://www.heatsink-guide.com/conten...=maxtemp.shtml
Are you running any hardware temperature monitoring apps ? The
lm_sensors package is the default, but you must run
sensors-detect, and set it all up correctly first.
Search the forums for info on thermal paste recommendations, as I know I've seen some. But personally, I've never had to goof with that stuff. I suggest that you start a new thread if you can't find an answer, so your question isn't buried here.
Good Luck,
V