Twisted test suite errors

===============================================================================
[ERROR]: twisted.test.test_extensions.CorrectComments.testNoSlashSlashComments

Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/twisted/test/test_extensions.py", line 17, in testNoSlashSlashComments
    contents = file(urlarg).read()
exceptions.IOError: [Errno 2] No such file or directory: '/usr/lib64/python2.6/site-packages/twisted/test/../protocols/_c_urlarg.c'
===============================================================================
[ERROR]: twisted.test.test_udp.MulticastTestCase.test_loopback

Traceback (most recent call last):
Failure: twisted.internet.defer.TimeoutError: <twisted.test.test_udp.MulticastTestCase testMethod=test_loopback> (test_loopback) still running at 120.0 secs
===============================================================================
[ERROR]: twisted.test.test_udp.MulticastTestCase.test_loopback

Traceback (most recent call last):
Failure: twisted.trial.util.DirtyReactorAggregateError: Reactor was unclean.
Selectables:
<twisted.test.test_udp.Server on 40112>
<twisted.test.test_udp.Client on 42859>
===============================================================================
[ERROR]: twisted.test.test_udp.MulticastTestCase.test_multiListen

Traceback (most recent call last):
Failure: twisted.internet.defer.TimeoutError: <twisted.test.test_udp.MulticastTestCase testMethod=test_multiListen> (test_multiListen) still running at 120.0 secs
===============================================================================
[ERROR]: twisted.test.test_udp.MulticastTestCase.test_multiListen

Traceback (most recent call last):
Failure: twisted.trial.util.DirtyReactorAggregateError: Reactor was unclean.
Selectables:
<twisted.test.test_udp.Server on 55296>
<twisted.test.test_udp.Server on 35168>
<twisted.test.test_udp.Server on 35168>
<twisted.test.test_udp.Client on 33615>
===============================================================================
[ERROR]: twisted.test.test_udp.MulticastTestCase.test_multicast

Traceback (most recent call last):
Failure: twisted.internet.defer.TimeoutError: <twisted.test.test_udp.MulticastTestCase testMethod=test_multicast> (test_multicast) still running at 120.0 secs
===============================================================================
[ERROR]: twisted.test.test_udp.MulticastTestCase.test_multicast

Traceback (most recent call last):
Failure: twisted.trial.util.DirtyReactorAggregateError: Reactor was unclean.
Selectables:
<twisted.test.test_udp.Server on 33605>
<twisted.test.test_udp.Server on 52830>
<twisted.test.test_udp.Client on 45380>
-------------------------------------------------------------------------------

Ran 1661 tests in 460.623s

FAILED (skips=48, expectedFailures=4, errors=7, successes=1605)