[Dovecot] reload without shutting imap connections down

[Hajo Locke]

Hello,

> From the looks and sounds of things your Dovecot installation and
> configuration is crashing without creating a dump.  What happens prior to
> the aforementioned log entries?

none unexpected behaviour. I run now with debugoptions. There is no evidence 
of problem.
some regular mailtraffic and some people are imap-ideling...then comes the 
reload and connections are shut down.
2.0.19 ist default of Ubuntu 12.10, but we also use 2.1.7 with same effect.
Older Machines with 1.2 dont show this behaviour.

Thanks,
Hajo