Last modified: 2009-12-30 23:07:01 UTC
The URL says it all. For history, the label was “User account "Kalan/1/1/1/1" is not registered”.
Fixed in r57613.
*** Bug 21144 has been marked as a duplicate of this bug. ***
*** Bug 21400 has been marked as a duplicate of this bug. ***
*** Bug 21938 has been marked as a duplicate of this bug. ***
I have just checked the above link (English Wikipedia should have r57613 based on the [[Special:Version]] page), and the bug still exists.
*** Bug 21972 has been marked as a duplicate of this bug. ***
You can't go by revision numbers to tell if Wikipedia is running a specific version or not. The fix hasn't been merged into the wmf-deployment branch yet. [1] 1- http://svn.wikimedia.org/viewvc/mediawiki/branches/wmf-deployment/includes/Article.php?view=log