[Twisted-Python] Odd behavior in IRC logbot

[Phillip J. Eby]

I've been using a slightly modified version of the IRC logging bot example 
to log traffic on #peak.  I've noticed, however, that it occasionally seems 
to hang, and has to be manually restarted.  As a workaround, I've set up a 
cronjob to kill and restart it daily, but that seems like a kludge.

Does anybody know why this happens?  Is there some kind of reconnect 
timeout such that it'll give up on reconnecting if the server it's trying 
to connect to is down?  I've noticed that the hang behavior seems to be 
correlated with global announcements about shutting down the IRC netwrok.