[Dovecot] unkillable imap process(es) with high CPU-usage

[Cor Bosman]

> The other guy who also had a problem was using 2.6.27. If the 3rd guy
> also replies that he's using 2.6.27 then that's pretty clearly the
> problem. Might be worth asking about in Linux kernel mailing list.

We've had something similar happen on 2.6.24. Over time processes would
take more and more CPU until they're at 100%. I moved to 2.6.26 and for
now I havent seen this happen on any of our 35 servers.

It seemed to be NFS related in our case.

Cor