2010/12/14 Raymond Yee raymond.yee@gmail.com:
What happened with User:Katr67 seems to be a bit different. We can find a renaming event for User:Katr67 http://en.wikipedia.org/w/index.php?title=Special:Log&type=renameuser&am... shows
03:31, 18 September 2010 Nihonjoe (talk | contribs) renamed User:Katr67 to "Valfontis" (53,420 edits. Reason: WP:CHU)
However, the User:Katr67 account is not deleted (as was User:Penrithpanthers). Instead, going to http://en.wikipedia.org/wiki/User:Katr67%C2%A0 redirects to http://en.wikipedia.org/wiki/User:Valfontis%C2%A0 And we look up both users at http://en.wikipedia.org/w/api.php?action=query&list=users&ususers=Ka... we get
This happens sometimes, usually due to the user being logged in while they're being renamed or something, causing the old name to be recreated. That doesn't seem to be the case here (timestamp mismatch) so I'm not sure exactly what happened in this particular case; maybe someone just recreated the account, simple as that.
Roan Kattouw (Catrope)