This is a quote from a vista user...
When people are having this problem with Vista they need to make another save folder. I have set mine up in the following manner. D:/LimeWire/Incoming then I pointed LimeWire to save the files in the incoming folder on the D drive.
This from a limewire dev...
LimeWire Forums - View Single Post - Missing files...
That's about all I know about vista and it's shared/saved folders...