1) What does red letters means in the "Incomplete downloads" folder?

2) I had some downloads with up to 90% complete, for some unknown reason to me it began downloading the files again from 0%, why?

My Inclomplete folder is rather big, more than 1,200 files, most of them audio files. But some are video files, these are my main consern because of the file size. My connection is through cable modem. I keep it connected 24/7. My PC is 3.59GHz with 2 GB of RAM running LimeWire v4.9.37 under Windows XP Pro version 2002 Service Pack 2. My Java is the current version 1.5XX.

My other question is why Lime Wire software stop running and closes by itself?