help

ok so like i searched for about a 1000 music files and set em to dl. after about 6 hours, LW crashed/froze and i lost all of my dls. its pissing me off since this is the second time today that happened. am i dl too much?
WTF?
i did the quick fix by deleting the .lW folder but now do i have to re do all my searches again?
this program has a wide variety, but the thing keeps crashing on me what the hell man, at least this time i recorded all the bands/artists im DLing, its really starting to get anoying