Same here - I changed the address in my profile, but am still getting heavily spammed on the old address too.
Can I opt out of the forwarding altogether? It really is getting to me - the email address I use didn't receive a single piece of spam till about a month ago, since then I get three or four through amiga.org redirection every day. Saying that, I haven't looked for the last few days, I daren't :-x