dovecot - Aug 2009 - runaway imap processes

I am running dovecot (1.2.3) with postfix (2.6.3), postfixadmin 
(2.1.0), maia mailguard (1.0.2) and squirrelmail (1.4.19) on Linux 
(kernel 2.6.27.8). 

I have an ongoing problem with imap processes that hang and eat all 
available cpu. I try killing them and they won't die. The only way to 
get rid of them is to reboot the server.

Any help with this will be greatly appreciated. I really need to get 
this solved as it has been an ongoing problem for more than a year.

On Thu, 2009-08-27 at 13:34 -0600, rpyne at kinfolk.org
wrote:
> I am running dovecot (1.2.3) with postfix (2.6.3), postfixadmin 
> (2.1.0), maia mailguard (1.0.2) and squirrelmail (1.4.19) on Linux 
> (kernel 2.6.27.8). 
> 
> I have an ongoing problem with imap processes that hang and eat all 
> available cpu. I try killing them and they won't die. The only way to 
> get rid of them is to reboot the server.
That's a Linux kernel bug. Upgrade to 2.6.27.10 or newer.

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