Forums Connection Issues Unable to Connect

(190747) * Unable to connect to server (Connection refused)
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(190750) * Connect retry #1 us.undernet.org (6667) (dns pool)

Same error here, and the network use this version of ircd:

Your host is Denver.CO.US.Undernet.Org,
running version u2.10.12.14

I have Windows 7 Home premium 64bit, and some time i have noticed the clients is style "not responding"

When it try to connect me at my bnc, or other network .. its Uusual?