What failed exactly? Xolox crashed? Parts of the file were dropped? Please use a more descriptive word so I can figure out which problem it is.

If this issue is related to "My file was a X% and went down to Y%...", you may want to refer to this thread: http://www.gnutellaforums.com/showth...threadid=16207

If Xolox crashed, then it probably just happened to happen at the same time.