Hmmm the free updates are only good for six months. Check out this link. http://www.limewire.com/english/content/download.shtml

There were some issues in versions prior to 4.8.1, that were corrected in the current version. It would be highly advisable to update your version. The basic version is free if you do not not want to donate for the pro version and support future developement of the program.

I'm not sure about your display problem updating may fix it also. If not post back.