Table corrupted and data lost (second time in one month!!)

This is the second time in this month !!!!

FATAL 1: Memory exhausted in AllocSetAlloc()
pqReadData() -- backend closed the channel unexpectedly.
This probably means the backend terminated abnormally
before or while processing the request.


A table has been corrupted and i don't know why...
It's really hard to recover the table, and last time i lost some data ;-(

Someone can help me to solve this problem ??? I don't want this table 
corrupted anymore ....

The postgres version is 7.0.2 ...
The aplication is CGI-Perl based, using DBI.
The system is Mandrake 7.0, and the hardware a  K6-2, 64Mb, 10Gb, etc...
It runs without X.

Thanks !!

-- 
Fernando Moyano

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