LW can often take a long time to shutdown. Make sure you give it plenty of time. To be sure, alt-control-del and make sure LW is not listed. If it is, then for some reason LW is taking longer than normal to shutdown & this is probably the reason behind your problem (at least one of them.) It sounds to me like you have one of those systems that might be highly sensitive to particular version of either or both LW & Java. So what to do? Try different version of Java or LW or both.