spearson is on the spot! The only thing you need to do with OSX is send the LW folder to the Trash. The only other item it installs during the installation process is the Prefs folder which can be found here: /Users/your_username/Library/Preferences/LimeWire & dump the entire folder.
Hope you give LW a decent chance!
Optimising it can make a world of difference:
Some hints:
A well set-up LW can start to automatically continue its dwnlding after it's settled down perhaps 2 out of 3 times you open LW. Optimising LW & Maximising Uplds & Dwnlds A (1st post only) & also Part B which is even better & last & least are search & dwnld hints. The latter one I've been thinking about re-writing for some time. That's just for playing it safe. eg- I show all speeds & qualities. eg: http://www.gnutellaforums.com/showth...028#post116028