pg_dump Crashes and core dumps

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POSTGRESQL BUG REPORT TEMPLATE
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Your name : Shibashish
Your email address : shib(at)postmark(dot)net

System Configuration
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Architecture (example: Intel Pentium) : Intel Pentium II

Operating System (example: Linux 2.0.26 ELF) : SCO_SV (SCO Open Server
5.0.4)

PostgreSQL version (example: PostgreSQL-7.3): PostgreSQL-7.3.1

Compiler used (example: gcc 2.95.2) : gcc 2.7.2.1

Please enter a FULL description of your problem:
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I have 2 databases. "test" and "working"
There r 39 tables in "test", very less data in them.
There r 40 tables in "working" and there is some data, not too much. And
there are referential integrety ocnstraints between the data.

When i do a "pg_dump test" it works fine.
But When i do a "pg_dump working" I get "Segmentation fault (core dumped)"

If anybody wants, i can send the core file. Any help will be highly
appreciated.