lo_creat() failing after 22 iterations

I'm running PostgreSQL 7.0.2 on RedHat6.2  Linux.  I try to call lo_creat()
100 times and always on the 23rd try I get a 0 return type for the OID
(error! condition).  I also get the following error in the postgres message
log:

            FATAL 1: my bits moved right off the end of the
world!

I must be bumping up against a system limit?  Any ideas?
Thx!

Sandy Barnes
email    sandy.barnes@honeywell.com