I've been reading up a lot on this 'miracle cure' patch and aside from the positive feedback it's been getting by the general public, i also came across this thread which argues that the patch is unnecessary for most people:
http://www.neowin.net/forum/index.php?showtopic=267665
it does at least show another side to the story.
In any case, and i quote from the thread, "Everyone has different opinions on the TCP/IP patch. If someone wants to use it, then let them. It's up to the user to decide what to do. If the user thinks their connection has improved with the patch, then let them think that."