dovecot - Dec 2011 - "Unstable" vs "Development" vs "Nightly"

I'm currently running v2.1rc1, but have been seeing errors like:

Dec  8 11:31:55 it kernel: auth[18914]: segfault at 48 ip 00fe2f74 sp 
bfcaccd0 error 4 in libauthdb_imap.so[fdd000+f000]

The unstable and nightly builds are newer, but are they likely to be 
more or less stable than the version I'm currently running?

I'd like to install a newer version, but am trying to get a feel for how 
usable they're likely to be.

Thanks,

Terry

On 9.12.2011, at 18.24, Terry Carmen wrote:
> I'm currently running v2.1rc1, but have been seeing errors like:
> 
> Dec  8 11:31:55 it kernel: auth[18914]: segfault at 48 ip 00fe2f74 sp
bfcaccd0 error 4 in libauthdb_imap.so[fdd000+f000]
It would be useful to get gdb backtrace from this. You should be able to get
core dumps by adding to dovecot.conf:

service auth {
  user = root
}

Run "ulimit -c unlimited" before starting dovecot. Then when it
crashes there should be a core file in your base_dir (e.g. /var/run/dovecot),
and you can do:

gdb /usr/local/libexec/dovecot/auth /var/run/dovecot/core
bt full
> The unstable and nightly builds are newer, but are they likely to be more
or less stable than the version I'm currently running?
> 
> I'd like to install a newer version, but am trying to get a feel for
how usable they're likely to be.
The newer hg versions generally should be more stable, since I've mainly
been trying to fix bugs instead of add new features.. The exception being this
week, since I've needed to do a few bigger changes.