/libexec/ld-elf.so.1: /usr/local/bin/postgres: Undefined symbol "shmctl"

[Reggie Euser]

Have been running FreeBSD 7.1 for months with PostgreSQL 8.3. All fine.

Today, made a change to hosts.allow to add an IP address for FTP access. 
Rebooted and attempted to restart PostgreSQL. Postgres wouldn't start and 
left this error in the log file:

/libexec/ld-elf.so.1: /usr/local/bin/postgres: Undefined symbol "shmctl"

Have Googled & IRC'd with no luck. Any suggestions or ideas about how to fix 
would be greatly appreciated!

Thanks!