I've disabled firewalls and anti-virus (both Norton) as well as Ad-aware pro's runtime protection program.

Now When limewire is minimized to the system tray it just bumps aroun at 0-6% sometimes it spikes up to 99% though or right around there.

0-6% would be exceptable. But the spikes are fairly irritating as it causes video, music, or games to lag. Why would a fairly idle application spike to 99%? Do I get hit with a search or something? Is it possibly trying to find something to share outwardly (which of couse I'm fine with, but why's it need my whole processor.

Watching it now for 2-3 minutes and it's not spiked to 99% again, but it does hit 30% at least once every 30 seconds. That might not be too bad. Still any tips/suggestions would help.

System specs are:
AMD 64, 3500+ (ya i know lame)
1.5 gig ram
10k RPM Raptor Harddrive
WinXP Home