Every computer is different, and it has to do with the size of the broadband “pipe” configured in that box. David referenced a tool he used. Here is a conversation we had on that. Read post numbers 6, 7, and 8 in this thread:

http://forum.avast.com/index.php?topic=27204.0

If you were getting 5 meg download speed on the problem computer prior to screwing around with the registry, I don’t have an answer for you. If you weren’t getting the advertised 5 meg download, you might look into using TCP Optimizer which is referenced, and linked, in the thread above.