[Users] troubles with usrloc module: db_mode=3 (DB only)

Hi all, Running openser (CVS HEAD) with usrloc:db_mode=3 causes it to crash repeatedly after 15 secs or so. The core dump does not say much except (gdb) bt #0 0x00b2b392 in ?? () #1 0x08131468 in mem_pool () #2 0xbfff8b54 in ?? () #3 0xbfff8b54 in ?? () #4 0x00000008 in ?? () #5 0x00b3adbf in ?? () #6 0x00000007 in ?? () #7 0x00b3a88c in ?? () #8 0x00000006 in ?? () #9 0x00b3adcd in ?? () #10 0x00000005 in ?? () #11 0x00b3adae in ?? () #12 0xb576a560 in ?? () #13 0x00000007 in ?? () #14 0x00b39c59 in ?? () #15 0x00000005 in ?? () #16 0x00b3adae in ?? () #17 0x00000001 in ?? () #18 0x00000001 in ?? () #19 0x00000000 in ?? () The openser log looks like: ERROR: receive_fd: EOF on 16 child process 18101 exited by a signal 11 core was generated I also don't see any mysql errors. The last mysql query issued by openser before dying is always Query delete from location where expires<'2006-06-05 16:03:17' (only the timestamp changes) Deleting all location table entries before starting up openser does not help either. Is there something special I have to consider when running openser in DB-only mode? Thanks for any help, Christian