Firstly I'd say it was your Java that caused the freezing, try this version...
Try uninstalling all versions of Java from the add/remove programs and then re-install the JRE 5.11 offline version....
Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11
Try the advice in this thread for the verifying of your downloads...
http://www.gnutellaforums.com/downlo...loads-why.html