sandpacker,
Do you mean that all your downloads in Saved Files are gone? Or is it your incompletes? Or both?

Do a search & look for one of the missing file names. Can you find it?

Nothing should delete unless you tell it to. Did you get your LimeWire from the official site? Have you run an AV, spyware, adware scan lately?

*Instead of losing the plot & ranting, maybe you could just explain exactly what the prob is