ICQ gave me definitely less problems than IRC. Both in terms of reliability and due to proxies, fwalls, etc. Also, ICQ can be either peer to peer or client server, depending on what you prefer. And I prefer much more ICQ's GUI. Takes less space on your desktop. :)

Taym
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MK II BLUE/RED 12GB #923
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= Taym =
MK2a #040103216 * 100Gb *All/Colors* Radio * 3.0a11 * Hijack = taympeg