Com.apple.wikid does not start. Generates 4000 error lines per 10 minutes

As of recently, without an up to now identifiable reason, wikid is failing to start. In system.log I see thousands of loglines per every few minutes, but I can't find what the real cause of the issue is or how to solve it. Does anybody have any idea?
The loglines I get every 8 seconds are:
1/27/12 9:04:21 PM     com.apple.wikid[35954]     /System/Library/Frameworks/Python.framework/V ersions/2.6/Extras/lib/python/zope/__init__.py:1: UserWarning: Module twisted was already imported from /usr/share/caldavd/lib/python/twisted/__init__.py, but /System/Library/Frameworks/Python.framework/Versions/2.6/Extras/lib/python is being added to sys.path
1/27/12 9:04:21 PM     com.apple.wikid[35954]       __import__('pkg_resources').declare_namespace(__name__)
1/27/12 9:04:21 PM     com.apple.wikid[35954]     Traceback (most recent call last):
1/27/12 9:04:21 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/application/app.py", line 669, in parseOptions
1/27/12 9:04:21 PM     com.apple.wikid[35954]         usage.Options.parseOptions(self, options)
1/27/12 9:04:21 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/python/usage.py", line 226, in parseOptions
1/27/12 9:04:21 PM     com.apple.wikid[35954]         for (cmd, short, parser, doc) in self.subCommands:
1/27/12 9:04:21 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/application/app.py", line 679, in subCommands
1/27/12 9:04:21 PM     com.apple.wikid[35954]         for plug in plugins:
1/27/12 9:04:21 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/plugin.py", line 200, in getPlugins
1/27/12 9:04:21 PM     com.apple.wikid[35954]         allDropins = getCache(package)
1/27/12 9:04:21 PM     com.apple.wikid[35954]     --- <exception caught here> ---
1/27/12 9:04:21 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/plugin.py", line 179, in getCache
1/27/12 9:04:21 PM     com.apple.wikid[35954]         dropinPath.setContent(pickle.dumps(dropinDotCache))
1/27/12 9:04:21 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/python/filepath.py", line 640, in setContent
1/27/12 9:04:21 PM     com.apple.wikid[35954]         f = sib.open('w')
1/27/12 9:04:21 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/python/filepath.py", line 450, in open
1/27/12 9:04:21 PM     com.apple.wikid[35954]         return open(self.path, mode+'b')
1/27/12 9:04:21 PM     com.apple.wikid[35954]     exceptions.IOError: [Errno 13] Permission denied: '/usr/share/caldavd/lib/python/twisted/plugins/dropin.cache.new'
1/27/12 9:04:22 PM     com.apple.wikid[35954]     /usr/share/caldavd/lib/python/twisted/mail/sm tp.py:10: DeprecationWarning: the MimeWriter module is deprecated; use the email package instead
1/27/12 9:04:22 PM     com.apple.wikid[35954]       import MimeWriter, tempfile, rfc822
1/27/12 9:04:22 PM     com.apple.wikid[35954]     /usr/share/caldavd/lib/python/calendarserver/ tap/caldav.py:49: DeprecationWarning: mktap and related support modules are deprecated as of Twisted 8.0. Use Twisted Application Plugins with the 'twistd' command directly, as described in 'Writing a Twisted Application Plugin for twistd' chapter of the Developer Guide.
1/27/12 9:04:22 PM     com.apple.wikid[35954]       from twisted.scripts.mktap import getid
1/27/12 9:04:22 PM     com.apple.wikid[35954]     /usr/share/wikid/lib/python/twisted_overrides /microdom.py:176: SyntaxWarning: assertion is always true, perhaps remove parentheses?
1/27/12 9:04:22 PM     com.apple.wikid[35954]       assert (oldChild.parentNode is self,
1/27/12 9:04:23 PM     com.apple.wikid[35954]     Traceback (most recent call last):
1/27/12 9:04:23 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/bin/twistd", line 19, in <module>
1/27/12 9:04:23 PM     com.apple.wikid[35954]         run()
1/27/12 9:04:23 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/scripts/twistd.py", line 27, in run
1/27/12 9:04:23 PM     com.apple.wikid[35954]         app.run(runApp, ServerOptions)
1/27/12 9:04:23 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/application/app.py", line 694, in run
1/27/12 9:04:23 PM     com.apple.wikid[35954]         runApp(config)
1/27/12 9:04:23 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/scripts/twistd.py", line 23, in runApp
1/27/12 9:04:23 PM     com.apple.wikid[35954]         _SomeApplicationRunner(config).run()
1/27/12 9:04:23 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/application/app.py", line 423, in run
1/27/12 9:04:23 PM     com.apple.wikid[35954]         self.logger.start(None)
1/27/12 9:04:23 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/application/app.py", line 251, in start
1/27/12 9:04:23 PM     com.apple.wikid[35954]         observer = self._getLogObserver()
1/27/12 9:04:23 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/scripts/_twistd_unix.py", line 140, in _getLogObserver
1/27/12 9:04:23 PM     com.apple.wikid[35954]         logFile = logfile.LogFile.fromFullPath(self._logfilename)
1/27/12 9:04:23 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/python/logfile.py", line 47, in fromFullPath
1/27/12 9:04:23 PM     com.apple.wikid[35954]         os.path.dirname(logPath), *args, **kwargs)
1/27/12 9:04:23 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/python/logfile.py", line 147, in __init__
1/27/12 9:04:23 PM     com.apple.wikid[35954]         BaseLogFile.__init__(self, name, directory, defaultMode)
1/27/12 9:04:23 PM     com.apple.wikid[35954]       File "/usr/share/caldavd/lib/python/twisted/python/logfile.py", line 32, in __init__
1/27/12 9:04:23 PM     com.apple.wikid[35954]         assert os.path.isdir(self.directory)
1/27/12 9:04:23 PM     com.apple.wikid[35954]     AssertionError
1/27/12 9:04:23 PM     com.apple.launchd[1]     (com.apple.wikid[35954]) Exited with exit code: 1
1/27/12 9:04:23 PM     com.apple.launchd[1]     (com.apple.wikid) Throttling respawn: Will start in 8 seconds
Curious thing is that in /System/Library/LaunchDaemons/com.apple.wikid.plist I see:
<plist version="1.0">
<dict>
        <key>Disabled</key>
        <true/>
</dict>
</plist>
Which I interpret as 'wikid is disabled', but then how come it's trying to start....

Hey Everyone - a quick update. A very helpful friend gave me a hand figuring this out turns out the wikid process was failing because of a blog plist file. Replacing the metadata.plist files for all the users (whom had blogs in the collab data store) along with all the metadata.plist files for the groups as well got the service back up and running. When I say replace, I mean we renamed them all metadataplist.old and the system rebuilt the files and then loaded up without crashing.
I'll try and better document this whole issue (with more research into the cause) and update this for anyone facing this in the future.

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