Are you sure you're actually running with PG 7.0.2 and not the PG 6.5
that came with RH 6.2? The RPMs install in different directories than
a built-by-hand PG's default directories, so it is possible to
build/install PG yourself but end up running the PG that came with the
distro if you're not aware of this.
I'm asking because query buffer length limits went away in PG 7...
If you are indeed actually running PG 7.0, then I'm stymied for the
moment.