Here's a new one with CVS version from 2005-11-03.
The mbox size is currently 42951945 bytes.
dovecot: Nov 24 12:05:50 Error: 11520 imap(username): Unexpectedly lost From-line at offset 33979772 from mbox file /mailhome/new/a/l/username/mbox
dovecot: Nov 24 12:05:50 Error: 11520 imap(username): file mbox-sync-rewrite.c: line 552 (mbox_sync_rewrite): assertion failed: (mails[idx].from_offset == start_offset)
dovecot: Nov 24 12:05:55 Error: child 11520 (imap) killed with signal 6
(gdb) bt full #0 0xffffe410 in ?? () No symbol table info available. #1 0xbfffefc8 in ?? () No symbol table info available. #2 0x00000006 in ?? () No symbol table info available. #3 0x00002d00 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 0x0809b52a in i_internal_panic_handler ( fmt=0x6
, args=0x2d00 ) at failures.c:375 No locals. #7 0x0809b954 in i_panic ( format=0x80a8acc "file %s: line %d (%s): assertion failed: (%s)") at failures.c:173 No locals. #8 0x08073ce3 in mbox_sync_rewrite (sync_ctx=0xbffff7d0, mail_ctx=0x0, end_offset=Unhandled dwarf expression opcode 0x93 ) at mbox-sync-rewrite.c:454 mails = Variable "mails" is not available.