I am running Fedora 13 with Linux Kernel 2.6.33-3.85.fc13.x86_64 with Gnome 2.30.0 on HP laptop ProBook 4510S At times, it almost freezes, with very slow response to the keyboard. System monitor shows that something is hogging the CPU. Sometimes, after a few minutes, it recovers, other times I have to re-boot. Any ideas? Nigel