I just read in the LimeWire FAQ a couple of days ago that if a file name has invalid characters in it (like a "backslash") the system cannot move it to your computer. It's kinda like an trying to save a file with a colon or backslash as part of the name. About all you can do is try to find the file named differently so you can download it. The files with the T-920357203 are most likely files from someone's incomplete folder. From what I've seen, the system adds a number to the file if you access it before it's completely downloaded.