I have the latest LW but I'm not sure about Java. Yes I'm at home but I have no clue what UPnP is. I doubt the router has anything to do with it since this computer is using a cable connection but I believe my router is a Vonage brand. I have no clue what so ever what the problem could be though as nothing has changed that would alter LW in any way. But if you could tell me a link to a page to update my Java that would be really helpful as well. (I stated the versions of LW and Java I had in first post btw.)