hi jeffncris,
having fun yet? i run XP and have had a similar issue,
not the same, just similar.i cant get a fix for it, however, if you do your ctrl,alt, del. go to processes. click twice in the cpu box, to get the high numbers to stay up the top.

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when your computer freezes up, look and see if java is locked using 95% or more.
if it is, what happens on my comp is, something other than frostwire tries using java and the comp just freezes, sometimes for 5 minutes, sometimes for over 24hrs. sometimes three times in one day, then no prob's for three months. when java is locked at 98%, automatic updates are the worst culprit, because you dont see them use java, another indicator is if you go to internet explorer when java is 98% and it either freezes or takes over a minute to open.
the only way i know of to solve my problem is turn FW off then back on.
see also
http://forum.frostwire.com/viewtopic.php?f=1&t=7042#p26062hope you can get it sorted.