Like (I found out) many others in the past I experienced Limewire (version 4.14.0 with Java 1.6.0_02) using between 90 and almost 100% of my CPU on my Windows 2000 (latest updates) PC, even if I put priority low (using processexplorer).

I searched Google and read quite a number of postings (here and elsewhere) about the CPU usage problem.
But NOWHERE I found a real solution, all suggested solutions (like another javaversion or disabling certain options) I found just didn't SOLVE the problem.

Because a PC using almost 100% CPU for Limewire is out of the question I would like to know IF and WHAT solution has been found for that problem.
If not unfortunally I have to look for another program (and I'm quite sure others will do or did the same!).

I had a similar problem with L/W 4.14.10 Pro and what worked for me was to uninstall Java and all Java updates from your computer and download the offline most current version JRE 6 from Java.com. Also, I uninstalled L/W.

I loaded the new Java first and then L/W and now L/W doesn't use up all of my CPU time which was taking before over 90+% of the CPU.

Hope this helps.