My bot has been working fine, now all of a sudden it no longer is connecting probably on my Windows XP SP3 machine (see http://pastebin.com/f20b2268f). If I run the code from another computer (Linux Fedora 12) it connects correctly (see http://pastebin.com/f13eb3491). When it doesn't connect probably in my IRC client it says the bot has joined the channel, but it doesn't receive any messages (they don't show up in the verbose output nor does onMessage get called. Also doesn't respond to private messages or joins). Any ideas what might be causing this?

Have you managed to get any further with this problem?

No progress so far, except it appears todo the same thing with my IRC client. And if I try a different server on the same network in my IRC client it connects. Its really weird, got no idea why it is just when I connect to servercentral.il.us.quakenet.org . It was the server I was using for weeks with no problems.