Обсуждение: flaky hardware?

Saw this in the postgres 8.2.3 server log today:

2007-02-10 00:27:12 PST PANIC:  XX001: corrupted item pointer: offset
= 0, size = 0
2007-02-10 00:27:12 PST LOCATION:  PageIndexMultiDelete, bufpage.c:624
2007-02-10 00:27:56 PST LOG:  00000: autovacuum process (PID 25471)
was terminated by signal 6
2007-02-10 00:27:56 PST LOCATION:  LogChildExit, postmaster.c:2430
2007-02-10 00:27:56 PST LOG:  00000: terminating any other active
server processes
2007-02-10 00:27:56 PST LOCATION:  HandleChildCrash, postmaster.c:2315

Smells like flaky hardware. Anyone have any tips?
Incidentally, Does anyone know of a good linux hard drive test/
verification tool?

-jay