I know that the setting UPnP must be running since the revised firmware allows it automatically but I cant confirm this other then what Iv was told and the actiontec support team sued that although they don't Handel much software everything works like its supposed to so,
However as to the LW prefs if you meant jest a folder containing settings and preferred directory that's not so easy as fedora keeps extended files in several locations and if its jest named limewire then I an not so sure witch extension to look fore.
but what is that going to do?
Also I wonder if the same measure could be dun to bittorrent and other types of sharewares?

The only thing to fear is knowing to much, o ya and fear.