Dear LW People

As a new user I am somewhat mystified by some of the technical terms used in this forum. For example, what are magnets? And how are they used in relation to LW and other P2P software (I'm no stranger to computer terminolgy, just new-ish ones).

What is a URI? I'm guessing at this point that it is either a shortened or lengthened form of URL.

I am sure that there are more that will catch my eye over the coming months but for now "Magnets & URI" have me baffled.

By the way, I notice that LW 4.0.6 is out, do I have to download the entire LW application again, as it took ages to get right (I had that missing "Option" buttons problem) or can I just click a "Search for Updates" facility?


(Almost but not quite a novice) UK Bob