2 years... and same problem.
I change machine and copy all *.db, i tried many backups and all get same error.
[07:12:49] -MemoServ- 1 RaphaeL 31 Mar 19:46:47 2010 MSD
[07:12:49] -MemoServ- 0 8·ºKBricio 01 Jan 03:00:00 1970 MSK
[07:12:49] -MemoServ- 0 01 Jan 03:00:03 1970 MSK
[07:12:49] -MemoServ- 149120120 01 Jan 03:00:00 1970 MSK
[07:12:49] -MemoServ- 1801677166 01 Jan 03:00:00 1970 MSK
[07:12:49] -MemoServ- *1920102246 23 Set 01:18:16 1974 MSK
[07:12:49] -MemoServ- *204879 hfã 30 Abr 09:06:16 1970 MSK
[07:12:49] -MemoServ- 10303576 X8 01 Jan 03:01:21 1970 MSK
[07:12:49] -MemoServ- 50470821 #Brèfã 02 Mar 19:10:43 1971
[07:13:11] <Global> PANIC! buffer = :tucupi PRIVMSG MemoServ :del all
[07:13:12] <Global> Backtrace: Segmentation fault detected
[07:13:12] <Global> Backtrace: report the following lines
[07:13:12] <Global> Backtrace: Anope version 1.8.5 (3037) build #1, compiled Oct 14 2010 15:09:14 QM
[07:13:12] <Global> Backtrace(0): ./services(do_backtrace+0x64) [0x807aad4]
[07:13:12] <Global> Backtrace(1): ./services(sighandler+0x16f) [0x807b9cf]
[07:13:12] <Global> Backtrace(2): /lib/libc.so.6 [0xb7c135f8]
[07:13:12] <Global> Backtrace(3): /home/redenort/services/modules/runtime/ms_del.so.6cfMo8(do_del+0x408) [0xb7abf0a8]
[07:13:12] <Global> Backtrace(4): ./services(do_run_cmd+0xa3) [0x806d363]
[07:13:12] <Global> Backtrace(5): ./services(mod_run_cmd+0x43) [0x806d513]
[07:13:12] <Global> Backtrace(6): ./services(memoserv+0x8b) [0x807ce3b]
[07:13:12] <Global> Backtrace(7): ./services(m_privmsg+0x4ff) [0x807df6f]
[07:13:14] <Global> Backtrace(
: /home/redenort/services/modules/runtime/inspircd11.so.FQ7Ssb(anope_event_privmsg+0x3b) [0xb7b5c57b]
[07:13:14] <Global> Backtrace(9): ./services(process+0x1d0) [0x808fe70]
[07:13:14] <Global> Backtrace: complete
[07:13:14] <Global> Shutdown: Services Shutting Down
[07:13:14] <Global> Services terminating: Segmentation fault