It depends which brand & model. For some the answer is stepping back your Java to 1.4.2 but others it is stepping back your graphic card driver version.

BTW LW.org has not offered version 4.8.1 for some time meaning you may have got your LW from a scam site. LW Basic is free, but the pro version costs $18.88; see http://www.gnutellaforums.com/showth...5&pagenumber=1

The official site is http://www.limewire.com/english/content/download.shtml