Sorry I have been away for a while and have no access to a computer. In reply to your questions I will try to answers them all.

What's your computer configuration, LW version, platform, internet connection,
I have windows XP, and my internet connection is via a network. we have boardband i think.

what you observe in greater detail,
What I do is do the search and pick the file I want and then click on download. Then in the download part at the bottom of thwe screen it just says connecting for about 4 minutes and then say needs more sources even thou there are like 35 sources when i do another search.

anything on your computer that may have changed since you noticed your problem (e.g.: installed new software, updates to OS, etc.)
No every thing is the same on my computer. but i have updated the version of limewire to see if that is what the problem was.

How full is your incomplete Library (no. of files),
none I have deleted them all.

How many files you're attempting to download at present?
Since it stopped letting e download I have only tried to download one at a time

How long is it since you checked your computer with diagnostic utility software?
I have no idea what this is. so I guess never.

My freind at work has also got limewire and theirs is working.