processor spikes on my p4 i850, HELP!

[BlueCalculus]

i just built a system off a intel D850GB board (from the i850 chipset) and i put a 1.8 GHz CPU on it running XP Pro with 512MB of pc600 rdram

but i get wierd CPU ussage spikes every now and then for no apparant reason.
i cant run Winamp 5.02 for very long without jumping to full % ussage for a second or more and my music lagging. this does not happen on my 450Mz comp with XP
same when i try to run pj64 emulator. i'll run at about 60% and then every now and then it'll lag down for a sec, like it's doing something.
this computer was just loaded and doesnt have virtually any background programs running and has never been on the internet.
does this happen to anyone else? any suggestions appreciated!
thanks

 

[HAVOC]

This happened to me with my old rig. P4 3.4GHz, when ever I used, "Freshdevices - Freshdownload application" my CPU would run at 60-80% usage. It only happened with that program. So, i stopped using it. To bad because it was a damn good download manager.

Must of been buggy or something. Did you try downloading the newest version of Winamp. I think it's 5.08 now.