Thanx Scout,
You were right,
I've pushed the FSB a few times, 110 120 132. All went well, except for the last time. The BIOS picked the CPU up as a 1188 Mhz. Then it just said disc faillure. It seemed the whole os was gone. My HD was erased, ha,ha,ha. My first important lesson, don't push it too far. It didn't matter though, I'd just installed it a few days ago. I forgot to raise the CPU voltage... could this be the reason the HD crashed?
I've got a 128Mb 133 memory dimm by the way, so the memory is allright (for o.c. the cpu), isn't it?