Deleted 54 session cookies and 4 domain cookies. And now logout does work. Logout is fixed.
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Unless I'm missing something, there is no edit or anything by the tags.

<p id="tags-13915"><a href="./cloud.php" title="'._('nube').'">tags</a>: <a href="./index.php?search=ludicrous%2Cspeed%2Cspaceballs&tag=true">ludicrous, speed, spaceballs</a></p>

And yes, I have javascript enabled, and firefox, etc. etc.

Only error in JS console is "Error: urchinTracker is not defined"
But that is probably because google-analytics is blackholed in my hosts file.

(Also FYI, the pop-up text for the tag cloud is still ".(nube)" which lead to a hilarious blog post once.)
(And the tags are all lumped into one search instead of each comma seperated tag being it's own click to search item)