On 31.1.2013, at 16.53, Andreas Kasenides <andreas.kasenides@cs.ucy.ac.cy> wrote:
Jan 31 15:41:12 imap(xxxx): Panic: Buffer full (8221 > 8192, pool <none>) Jan 31 15:41:12 imap(xxxx): Error: Raw backtrace: /usr/local/lib/dovecot/libdovecot.so.0(+0x5b83a) [0x7ffbaa3a783a] -> .. master: service(imap): child 2236 killed with signal 6 (core dumped) where xxxx is the offending user name. The error repeats at random intervals, I guess related to the activity.
Could you get a gdb backtrace for this? It says "core dumped", so there should be a core file in that user's home directory. Then do:
gdb /usr/local/libexec/dovecot/imap /home/user/core bt full
There are also a bunch of fixes since beta1, so this crash might have also been fixed. Although I don't specifically remember fixing this one.