I recon after some thought that the downloads.bac &.dat files r to blame... they must contain the information about how much and which packets (parts) of a file has been downloaded and which have not. maybe backing these files up would b the answer. then if u have a crash u could replace these files and hopefully all would b hunky dory....this is a really anoying trait of limewire...it's happened to me twice, this time with 6.5 gb of incomplete files and it has also affected loads of other folk as well...I hope that the boffins in the big limewire house are on the case. t'would b nice if it were fixed eh?