I get about 4-5 authorization request spams on ICQ every day. This used to be no problem at all, because I could tell my IM client to ignore invites. However, about a year ago I moved to using Jabber and talking to ICQ via a transport (the superior way of talking to ICQ servers from more than one computer at a time), and since then, none of the IM clients ignore auth requests anymore.
This is pretty annoying, and if there’s a plugin or a setting for Miranda IM or Pidgin, I’d love to know about it. Because I’m not adding any new ICQ contacts. ICQ is legacy mode for IM.