Given the kernel you're using this could be (related to) this bug: https://launchpad.net/distros/ubuntu/+source/linux- source-2.6.15/+bug/36014
-- CPU frequency scaling isnt workin https://launchpad.net/bugs/44699 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs