This problem shows up for some people after installation. You receive a Java error message saying "limewire has encountered a
FATAL ERROR". The way to solve this one seems to be to change compatibility of LW to Windows 2000 or NT. See point 5 here for instructions:
Fixes for Limewire
See the following examples to see if these are your symptoms: 1.
Sample 1, 2.
Sample 2, 3.
Sample 3