Post the problem over at the beta bugs section at the limewire forums.

I just upgraded from 4.14.8 to 4.16.6. For a start, it asked me during installation which extensions I wished to share. Despite unticking many, after LW started & I check shared extensions, the extensions were still there checked so I had to uncheck them again. DOH

My shared folders are within the LW download folder. So everytime I download a new file I need to decide whether I wish to share that file or not. But this was the same with LW 4.14.8, that they were automatically shared. I think that's because the main folder chosen to share is the LW download folder. I should imagine the only way to overcome that is remove the LW download folder from shared list, then choose each folder specifically to add to the shared list.

BTW I no longer post at the LW beta forums. After over half a year of Sam Berlin scoffing at my bug reports I felt there was no point any longer. (Arrogance seems to get the better of some people after they get a small elevation in position.) Nor do I contact him directly any longer.