Unable to unlock a repository

[Nautile Bleu]

Hi,
I have a local repository shared on a SMB. When I try to push commits to it,
I have the following errors:

/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/site-packages/mercurial-1.3-py2.6-macosx-10.5-i386.egg/mercurial/lock.py:71:
DeprecationWarning: use lock.release instead of del lock
  locker = self.testlock()

It seems to be an authentication error, but even if I change to repo
permissions to be the owner, I can't push. I also can't delete this repo, as
the lock symlinks cannot be deleted, even with sudo rm -f lock.

How can I unlock this repository ?

Goulwen
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