I think its great. Windows sucks because the programmers are always worried about backwards compatability. That is why it took them sooooo long to dump DOS even though it was old and pulling evering thing down. Yes, 0.6 is backwards compatible, but I think it is a GREAT idea to block the 0.4 clients. In the future I would also suggest he block any client that is not actively developed.

LET GNUTELLA GROW!!!