I'm seeing test_strptime failures on this box, running
a version of Fedora Core that's between 1 and the new
test release.

test test_strptime failed -- Traceback (most recent
call last): 
File "Lib/test/test_strptime.py", line 258, in
test_timezone
    self.failUnlessEqual(strp_output.tm_isdst, 0)
AssertionError: -1 != 0

Note that the following line (which tests GMT) also
fails with a -1.

The underlying failure:
>>> import _strptime
>>> strp_output = _strptime.strptime("UTC", "%Z")
>>> strp_output.tm_isdst
-1
>>> strp_output = _strptime.strptime("GMT", "%Z")
>>> strp_output.tm_isdst
-1