'Notice' bug

Your name :Leonid Zubatov
Your email address :leon(at)udmnet(dot)ru

System Configuration
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Architecture :intel pentium

Operating System :Linux redhat 5.9 kernel 2.2.3-5

PostgreSQL version : PostgreSQL-6.5

Compiler used :gcc 2.7.2.3

Please enter a FULL description of your problem:
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I discovered this problem first trying to create a table with a primary
key from a C program using PQexec. The table is always successfully
created, but program dies with core dump immediately after that.

After a bit of investigation I found that ANY query which produces
NOTICE from backend crashes the program. These statements are
EXPLAIN, create table with FOREIGN KEY.

There is also something wrong with psql application: it prints all
NOTICES from backend twice.

And, by the way, psql doesn't feel the up-arrow key
on the keyboard, it prints symbols ^[[A when I press up-arrow.
There wasn't such problem with Postgres 6.4.

Please describe a way to repeat the problem. Please try to provide a
concise reproducible example, if at all possible:
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Simply give one of described commands to the backend from a C program
via PQexec function

If you know how this problem might be fixed, list the solution below:
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Have no idea :)

--
Leon.