I apologize for taking so long with this. The attached patch is for test_posix against trunk (I shuffled around some code and extended some things to improve PosixTester.tearDown). Let me know if I need to wash, rinse, repeat for py3k, etc.

Thanks!

# Standard ports copy of python 2.7 without the *chflags configure fix.

$ python2.7 Lib/test/test_posix.py 
testNoArgFunctions (__main__.PosixTester) ... ok
test_access (__main__.PosixTester) ... ok
test_chdir (__main__.PosixTester) ... ok
test_chflags (__main__.PosixTester) ... skipped 'test needs os.chflags()'
test_chown (__main__.PosixTester) ... ok
test_confstr (__main__.PosixTester) ... ok
test_dup (__main__.PosixTester) ... ok
test_dup2 (__main__.PosixTester) ... ok
test_fchown (__main__.PosixTester) ... ok
test_fdopen (__main__.PosixTester) ... ok
test_fstat (__main__.PosixTester) ... ok
test_fstatvfs (__main__.PosixTester) ... ok
test_ftruncate (__main__.PosixTester) ... ok
test_getcwd_long_pathnames (__main__.PosixTester) ... ok
test_getresgid (__main__.PosixTester) ... ok
test_getresuid (__main__.PosixTester) ... ok
test_initgroups (__main__.PosixTester) ... ok
test_lchflags_regular_file (__main__.PosixTester) ... skipped 'test needs os.lchflags()'
test_lchflags_symlink (__main__.PosixTester) ... skipped 'test needs os.lchflags()'
test_lchown (__main__.PosixTester) ... ok
test_lsdir (__main__.PosixTester) ... ok
test_osexlock (__main__.PosixTester) ... ok
test_osshlock (__main__.PosixTester) ... ok
test_pipe (__main__.PosixTester) ... ok
test_setresgid (__main__.PosixTester) ... ok
test_setresgid_exception (__main__.PosixTester) ... ok
test_setresuid (__main__.PosixTester) ... ok
test_setresuid_exception (__main__.PosixTester) ... ok
test_stat (__main__.PosixTester) ... ok
test_statvfs (__main__.PosixTester) ... ok
test_strerror (__main__.PosixTester) ... ok
test_tempnam (__main__.PosixTester) ... ok
test_tmpfile (__main__.PosixTester) ... ok
test_umask (__main__.PosixTester) ... ok
test_utime (__main__.PosixTester) ... ok

----------------------------------------------------------------------
Ran 35 tests in 0.020s

OK (skipped=3)

# Hand compiled version using sources from trunk.

$ /scratch/python/2.7/bin/python Lib/test/test_posix.py 
testNoArgFunctions (__main__.PosixTester) ... ok
test_access (__main__.PosixTester) ... ok
test_chdir (__main__.PosixTester) ... ok
test_chflags (__main__.PosixTester) ... ok
test_chown (__main__.PosixTester) ... ok
test_confstr (__main__.PosixTester) ... ok
test_dup (__main__.PosixTester) ... ok
test_dup2 (__main__.PosixTester) ... ok
test_fchown (__main__.PosixTester) ... ok
test_fdopen (__main__.PosixTester) ... ok
test_fstat (__main__.PosixTester) ... ok
test_fstatvfs (__main__.PosixTester) ... ok
test_ftruncate (__main__.PosixTester) ... ok
test_getcwd_long_pathnames (__main__.PosixTester) ... ok
test_getresgid (__main__.PosixTester) ... ok
test_getresuid (__main__.PosixTester) ... ok
test_initgroups (__main__.PosixTester) ... ok
test_lchflags_regular_file (__main__.PosixTester) ... ok
test_lchflags_symlink (__main__.PosixTester) ... ok
test_lchown (__main__.PosixTester) ... ok
test_lsdir (__main__.PosixTester) ... ok
test_osexlock (__main__.PosixTester) ... ok
test_osshlock (__main__.PosixTester) ... ok
test_pipe (__main__.PosixTester) ... ok
test_setresgid (__main__.PosixTester) ... ok
test_setresgid_exception (__main__.PosixTester) ... ok
test_stat (__main__.PosixTester) ... ok
test_statvfs (__main__.PosixTester) ... ok
test_strerror (__main__.PosixTester) ... ok
test_tempnam (__main__.PosixTester) ... ok
test_tmpfile (__main__.PosixTester) ... ok
test_umask (__main__.PosixTester) ... ok
test_utime (__main__.PosixTester) ... ok

----------------------------------------------------------------------
Ran 35 tests in 0.009s

OK