Drools, jBPM and Guvnor are moving from codehaus IRC servers to Freenode. You can now find us on the following channels on irc://chat.freenode.net:6667
#drools
#droolsdev
#jbpm
#jbpmdev
#guvnor
#guvnordev
#drools
#droolsdev
#jbpm
#jbpmdev
#guvnor
#guvnordev
freenode also maintains a web interface:
http://webchat.freenode.net/