Mod_python error: "PythonHandler trac.web.modpython_frontend"

Traceback (most recent call last):

  File "/usr/lib/python2.4/site-packages/mod_python/apache.py", line 287, in HandlerDispatch
    log=debug)

  File "/usr/lib/python2.4/site-packages/mod_python/apache.py", line 464, in import_module
    module = imp.load_module(mname, f, p, d)

  File "/usr/lib/python2.4/site-packages/Trac-0.11-py2.4.egg/trac/web/__init__.py", line 1, in ?
    from trac.web.api import *

  File "/usr/lib/python2.4/site-packages/Trac-0.11-py2.4.egg/trac/web/api.py", line 17, in ?
    from BaseHTTPServer import BaseHTTPRequestHandler

  File "/usr/lib/python2.4/BaseHTTPServer.py", line 75, in ?
    import socket # For gethostbyaddr()

  File "/usr/lib/python2.4/socket.py", line 45, in ?
    import _socket

ImportError: No module named _socket