Trac failing with below error & 'trac-admin resync' not working & restarting postgresql is also not working!!

[anonymous]

Python Traceback Traceback (most recent call last):

File "/var/lib/python-support/python2.5/trac/web/main.py", line 387, in dispatch_request

dispatcher.dispatch(req)

File "/var/lib/python-support/python2.5/trac/web/main.py", line 191, in dispatch

chosen_handler = self._pre_process_request(req, chosen_handler)

File "/var/lib/python-support/python2.5/trac/web/main.py", line 263, in _pre_process_request

chosen_handler = f.pre_process_request(req, chosen_handler)

File "/var/lib/python-support/python2.5/trac/versioncontrol/api.py", line 73, in pre_process_request

self.get_repository(req.authname) # triggers a sync if applicable

File "/var/lib/python-support/python2.5/trac/versioncontrol/api.py", line 101, in get_repository

repos = self._connector.get_repository(rtype, rdir, authname)

File "/var/lib/python-support/python2.5/trac/versioncontrol/svn_fs.py", line 260, in get_repository

crepos = CachedRepository(self.env.get_db_cnx(), repos, None, self.log)

File "/var/lib/python-support/python2.5/trac/versioncontrol/cache.py", line 34, in init

self.sync()

File "/var/lib/python-support/python2.5/trac/versioncontrol/cache.py", line 59, in sync

raise TracError("The 'repository_dir' has changed, "

TracError: The 'repository_dir' has changed, a 'trac-admin resync' operation is needed.

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[Emmanuel Blot]

Submitted twice, see #6570.