Bad records in table

Friends,
I have a table with bad data in it. Whenever the backend hits the tupples
with bad data I get:

Jul 2 07:44:18 db postgres[2652]: [22] DEBUG: server process (pid 2869)
was terminated by signal 11
Jul 2 07:44:18 db postgres[2652]: [23] DEBUG: terminating any other active
server processes
Jul 2 07:44:18 db postgres[2652]: [24] DEBUG: all server processes
terminated; reinitializing shared memory and semaphores
Jul 2 07:44:18 db postgres[2871]: [25] FATAL 1: The database system is
starting up
Jul 2 07:44:18 db postgres[2870]: [25] DEBUG: database system was
interrupted at 2002-07-02 07:42:30 PDT
Jul 2 07:44:18 db postgres[2870]: [26] DEBUG: checkpoint record is at
1/94E54768
Jul 2 07:44:18 db postgres[2870]: [27] DEBUG: redo record is at
1/94E54768; undo record is at 0/0; shutdown TRUE
Jul 2 07:44:18 db postgres[2870]: [28] DEBUG: next transaction id:
55508992; next oid: 13249044
Jul 2 07:44:18 db postgres[2870]: [29] DEBUG: database system was not
properly shut down; automatic recovery in progress
Jul 2 07:44:18 db postgres[2870]: [30] DEBUG: redo starts at 1/94E547A8
Jul 2 07:44:18 db postgres[2870]: [31] DEBUG: ReadRecord: record with zero
length at 1/94E547CC
Jul 2 07:44:18 db postgres[2870]: [32] DEBUG: redo done at 1/94E547A8
Jul 2 07:44:20 db postgres[2870]: [33] DEBUG: database system is ready

I can identify the bad records with a simple perl script that reads all the
records sequentially and lets me know which ones crash the back end. Now
that I know which ones they are, how can I get rid of them?

Once I get this all fixed, what kinds of tests should I do on the machine
to see if it's got some kind of hardware problem? It's RedHat Linux
2.4.9-31smp.

Thanks for your help!
Peter Darley