Maybe the solution for your problem lies here:
http://www.gnutellaforums.com/showth...ht=blue+screen
As for a possible Java issue. Uninstalling all Java from your computer, rebooting and then downloading the newest (1.5.0_08) version using the JRE offline installer from here:
http://java.sun.com/j2se/1.5.0/download.jsp
Installing ti and rebooting again might also help to solve the problem....