> /usr/bin/postmaster: CleanupProc: pid 888 exited with status 139
Okay, we have a postgres process going down with a SEGV. Do you
have a core file? I don't quite remember where they end up, but my
guess would be either the directory with postgres or somewhere in
the data directory (probably the directory for the db).
Next step is to try to get a backtrace from the core.