What do you mean by unhide? You should have only a shared limewire folder for all your uploads/downloads and maybe a subfolder for any additional files. I dont recommend deleting certain files that are hidden on your system though. what did you delete?

In your windows document/settings folder, all you limewire folders/prefs. are stored there.

Im not sure why you would use up a lot of memory in LW as its pretty lite weight and shouldnt really use up all that much. Its not known to be a mem hog.

what version of Limewire are you using and where did you get it?? if your drive fillsup with unwanted files then that could only mean you got hit with a virus.