Comment 45 for bug 432670

Mikkel, if you don't know how to install only a lucid kernel, maybe you shouldn't be running lucid just yet ;-) Running the development very often requires more than this skill. Assuming you are running 32-bit, you can install the kernel like "cd /tmp ; wget http://de.archive.ubuntu.com/ubuntu/pool/main/l/linux/linux-image-2.6.32-14-386_2.6.32-14.20_i386.deb ; sudo dpkg -i linux/linux-image-2.6.32-14-386_2.6.32-14.20_i386.deb"

If your computer is overheating even when idling, you may be seeing a different issue than me. Try out one of the live CDs, including those from earlier releases to see if the problems arise there as well. Are you sure nothing is blocking free air flow? Please open an item in the answer tracker and subscribe me to it so as not to clutter this ticket. To me it sounds like you may be experiencing something else.