Your LW use might be affected by ISP influence.
 
Try deleting your LW Preferences folder whilst LW is 
closed; instructions here: 
Point #2 & 3 in Fixes for Limewire (sample image included 2nd last post of page.) 
I'd also suggest you update your LW ... 
http://www9.limewire.com/download/LimeWireWin-full.exe 