dovecot: Apr 26 23:05:06 Error:  3536 IMAP(support): Corrupted transaction log file /mailhome/new/m/2/support/.imap/INBOX/dovecot.index.log.2: invalid indexid (1114564800 != 1114571103)
dovecot: Apr 26 23:13:30 Error:  3536 IMAP(support): UIDVALIDITY changed (1114570968 -> 1114571601) in mbox file /mailhome/new/m/2/support/mbox
dovecot: Apr 26 23:13:30 Error:  3536 IMAP(support): file mbox-lock.c: line 518 (mbox_lock): assertion failed: (lock_type == F_RDLCK || mbox->mbox_lock_type != F_RDLCK)
dovecot: Apr 26 23:13:31 Error: child 3536 (imap) killed with signal 6


(gdb) bt full
#0  0xffffe410 in ?? ()
No symbol table info available.
#1  0xbffff518 in ?? ()
No symbol table info available.
#2  0x00000006 in ?? ()
No symbol table info available.
#3  0x00000dd0 in ?? ()
No symbol table info available.
#4  0xb7ef1d41 in raise () from /lib/tls/libc.so.6
No symbol table info available.
#5  0xb7ef3529 in abort () from /lib/tls/libc.so.6
No symbol table info available.
#6  0x08098eba in i_internal_panic_handler (
    fmt=0x6 <Address 0x6 out of bounds>, 
    args=0xdd0 <Address 0xdd0 out of bounds>) at failures.c:374
No locals.
#7  0x080992d4 in i_panic (
    format=0x80a570c "file %s: line %d (%s): assertion failed: (%s)")
    at failures.c:173
No locals.
#8  0x0806a7e1 in mbox_lock (mbox=0x80c3bc8, lock_type=1, lock_id_r=0xbffff72c)
    at mbox-lock.c:532
        ret = 0
#9  0x0806eddc in mbox_sync (mbox=0x80c3bc8, flags=MBOX_SYNC_REWRITE)
    at mbox-sync.c:1488
        lock_type = Variable "lock_type" is not available.


(gdb) bt
#0  0xffffe410 in ?? ()
#1  0xbffff518 in ?? ()
#2  0x00000006 in ?? ()
#3  0x00000dd0 in ?? ()
#4  0xb7ef1d41 in raise () from /lib/tls/libc.so.6
#5  0xb7ef3529 in abort () from /lib/tls/libc.so.6
#6  0x08098eba in i_internal_panic_handler (
    fmt=0x6 <Address 0x6 out of bounds>, 
    args=0xdd0 <Address 0xdd0 out of bounds>) at failures.c:374
#7  0x080992d4 in i_panic (
    format=0x80a570c "file %s: line %d (%s): assertion failed: (%s)")
    at failures.c:173
#8  0x0806a7e1 in mbox_lock (mbox=0x80c3bc8, lock_type=1, lock_id_r=0xbffff72c)
    at mbox-lock.c:532
#9  0x0806eddc in mbox_sync (mbox=0x80c3bc8, flags=MBOX_SYNC_REWRITE)
    at mbox-sync.c:1488
#10 0x08068426 in mbox_storage_close (box=0x80c3bc8) at mbox-storage.c:955
#11 0x0808ce9d in mailbox_close (box=0x0) at mail-storage.c:300
#12 0x0805942a in client_destroy (client=0x80bcb58) at client.c:72
#13 0x0805973c in _client_input (context=0x80bcb58) at client.c:391
#14 0x0809e04a in io_loop_handler_run (ioloop=0x80bb9b0) at ioloop-poll.c:184
#15 0x0809d769 in io_loop_run (ioloop=0x80bb9b0) at ioloop.c:218
#16 0x08060537 in main (argc=1, argv=0xbffffa44, envp=0xbffffa4c) at main.c:228


(gdb) up
#8  0x0806a7e1 in mbox_lock (mbox=0x80c3bc8, lock_type=1, lock_id_r=0xbffff72c)
    at mbox-lock.c:532
532                     mbox->mbox_excl_locks++;
(gdb) p mbox->mbox_lock_type
$1 = 0