Hi,
Sometimes when I try to download a file from a search result it says "Downloading (null)" in the status bar, and adds a line to the transfer window without a name, a size of 0 bytes, and the progress bar is all scrambled up. If I try to get the file details, the program hangs. I remember having the same thing back when using xMule, but never been able to figure out when it occurs, seems random to me.