Cliche running Limewire + ITunes

[nad760]

Hello all. I am new to the arena so bare with me if Im repetitive. I am having an issue running both Limewire and ITues together on the same computer (WinXP). The issue is that the computer stalls for about 1 - 2 mins, then its okay for a bit, then repeats. Is there a compatability issue I'm not aware of??? I have the latest updates and newest versions of Java (I want to think so). Any ideas??? I was able to run both before using each others older versions, up until I updated to Limewire 4.17, and ITunes 7.3. Each program seems to operate fine ALONE. Thanx for any help.