7.2.3 / SuSe Linux / S/390

Anyone have this combination running?

7.2.3 built and runs fine on my RedHat 7.2 box.  Only partially works on
the S/390 Linux, with nearly identical config (no tcl on the 390).
Problem seems to be client processes segfaulting.  Some work:  PgAccess
from another machine seems fine; pg_dump seems ok.  Others die with
segfault: psql, as well as createuser and createdb, which use psql.

Any ideas whats going on?

FWIW, this is an upgrade from 7.1.2.

TiA,

Mike