IMAP timeout

[Tim Gray]

I've been using mutt over IMAP on my laptop and I had a question for the 
list.  When I put my laptop to sleep or disconnect it from the internet, 
clearly my IMAP connection is broken.  When I resume my connection at a 
later time, like the next morning, mutt is often in a 'frozen' state.  
After about 2 minutes, it finally warns me the connection was lost.  At 
this point in time I can reopen the mailbox and everything is fine.

Is there anyway to shorten the timeout time?  It doesn't seem like 
$timeout or $connect_timeout have any effect.

As a side note, I'm already aware of offlineimap as an alternative.