Is this happening with all networks, or just one? If just one, which network? Are you unable to connect at all with mIRC, or do you connect and then get disconnected? I've noticed that some people have been asking for scripts that would automatically disconnect any client besides java for their network. (Personally I think that sounds like a bit of a contradiction, asking for a script that runs on mIRC to prevent mIRC from connecting, but that's (possibly) irrelevant to your problem).
If you connect and then get disconnected, please post the disconnection notice (it will probably help a lot).
