I get that error at all my connections and at all networks and servers.... I use mIRC 6.16, which I installed a few hours ago, and before I installed it, my previous version worked perfectly! I use WinXP Professional. Here is an example of the errors:
* Connect retry #92 irc.rizon.net (7000)
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* Unable to connect to server (Connection refused)
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* Connect retry #93 66.45.234.200 (7000)
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* Unable to connect to server (Connection refused)
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Here for another one:
* Connecting to irc.accessirc.net (6667)
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* Unable to connect to server (Connection refused)
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* Connect retry #1 213.64.91.190 (6667)
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* Unable to connect to server (Connection refused)
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It just happens at all my tries to connect...