from what i remember, my experience with trillian is that it's instable, AD prone.. Gaim is fast, much faster than MSN

Though, on windows platform, i only use msn messegner, purely because the feature set is full, no third party software can compete with that.. I don't use any other network either.. except IRC
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lisp hacker

running: FreeBSD 5.4 - still learning

develop with: SBCL + emacs for lisp, Anjuta IDE +gcc for c, SPE for python..
browse with: opera