Media Player hangs while using Limewire

[StrykerX]

Whenever I have Limewire running, I can't use Windows Media Player or Realplayer without it hanging. The player will sit there with a blank screen and the machine freezes up (though the audio part of the clip does still play). Hitting CTRL-ALT-DEL and closing Media Player or Realplayer works, but it takes a LONG time (as much as a minute) for the task manager to appear. This happens with any media type I try, though VLC player DOES work. Any suggestions?

System specs:

3.2 GHz P4
1 GB RAM
Limewire Pro 4.4.5 (4.4.4 also had the problem)
Windows Media Player 9 (10 also froze so I rolled back to test 9)
JRE 1.4.2 (1.5.0 also locks up)

Spyware and virus scans are negative and memory test shows no RAM problems.