On 11.2.2012, at 9.58, Thomas Leuxner wrote: > $ doveadm backup -u tlx at leuxner.net mdbox:/tmp/tlx/mdbox > dsync(tlx at leuxner.net): Panic: file dsync-worker-local.c: line 1643 (local_worker_save_msg_continue): assertion failed: (ret == -1) Fixed: http://hg.dovecot.org/dovecot-2.1/rev/57c735865b19