Regression test horology failure

Attached are regression diffs for 7.4.10, compiled from source on RHEL 3 U6 
(gcc 3.2.3 20030502, glibc-2.3.2-95.37) using:

make distclean
./configure '--with-perl' '--prefix=/usr/local/postgresql-7.4.10'
make && make install && make check

The tests fail for PST/PDT in 2034.

Looking at the buildfarm there is no other RHEL 3 system building the 7.4 
branch at the moment. The same is true for 7.3.12 and 7.4.7 by the way.

Is this a local problem in my glibc/tz libraries? I am not really worried 
because I will upgrade to 8.1 shortly, but understanding the problem would 
be a good thing.

Tom, you are building 7.3 for RedHat, do you see any similar regression 
failures?

Best Regrads,
Michael Paesold