LW 4.1.7 has been replaced by 4.1.8 just a few days ago & can be found with links from here:
http://www.gnutellaforums.com/showth...5&pagenumber=1
Pro users can dwnld it from their personal dwnld page (at bottom of page).
I'm not sure about the beta being able to fix the problem. Perhaps they can I'm not sure about that. The beta page or history page of beta releases will probably say something about this.