>>does your internet provider frequently change your IP address, >>or have you had the same one for a long time.

No, IP only changes (I think) when I reset the router. Last router reset was 2-3 weeks ago, but error message appeared only 2 days ago.

>>Is there someone else in your LAN that's been accessing the >>same irc server, and it could be them instead of you that's >>infected?

nobody else on my LAN - home computer, only 1 user.

Do you get this error at all irc servers you try to connect to?

Yes, so far.

>>Your message makes it sound like you got this error at more >>than 1 irc server, but it would help if more of a warning >>error than 'compromised host'.

------ include section of log file -----------
02[15:06] * Connect retry #1 vancouver.bc.ca.undernet.org (6667)
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05[15:06] -vancouver.bc.ca.undernet.org- *** Looking up your hostname
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05[15:06] -vancouver.bc.ca.undernet.org- *** Checking Ident
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05[15:06] -vancouver.bc.ca.undernet.org- *** No ident response
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05[15:06] -vancouver.bc.ca.undernet.org- *** Couldn't look up your hostname
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05[15:06] -vancouver.bc.ca.undernet.org- *** Ident broken or disabled, to continue to connect you must type /QUOTE PASS 25780
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02[15:07] * Disconnected
-
02[15:07] * Connecting to vancouver.bc.ca.undernet.org (6667)
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05[15:07] -vancouver.bc.ca.undernet.org- *** Looking up your hostname
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05[15:07] -vancouver.bc.ca.undernet.org- *** Checking Ident
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05[15:07] -vancouver.bc.ca.undernet.org- *** Found your hostname
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05[15:07] -vancouver.bc.ca.undernet.org- *** No ident response
-
[15:07] [1] compromised host .
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03[15:07] Closing Link: books860 by Tampa.FL.US.Undernet.org (G-lined)
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02[15:07] * Disconnected
------------------- end include --------------