If you suspect it's overheating, you could install the computertemp package and add the CPU temperature applet to your panel. Otherwise, the only other thing I can think of worth checking is Palimpsest (aka Disk Utility from System -> Administration).
There might be something in dmesg, but I'm inclined to agree that it's probably a cooling issue, in which case blowing dust out is the best plan. -- Josh Holland <[email protected]> -- [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-uk https://wiki.ubuntu.com/UKTeam/
