Have a look at http://www.makelinux.net/reference
some examples of the mix here, none ISO compliant:
linux-foundation.org 25-Apr-2006 --  January 21st, 2007 --  January 21, 2007 --  22 January 2007 14:33, 22 January 2007 -- [history in the mediawiki interface] 06:32, 22 January 2007 (PST) -- [mediawiki created timestamp in signatures] 11/06/06 (what is that???) 2006, November 4
Tobias, I'm a huge fan of ISO 8601 dates. However, the most important thing is that they be unambiguous, and January 21, 2007 is unambiguous. Could you please add page names that show 11/06/06 style dates. You can also edit these yourself, it's it not a top-level page. Thanks.
- Dan Kohn
Could someone create a page ISO 8601, or Date format? I think this is a broader issue not affecting only the LF website, but very much lot of software. Mediawiki, Hypermail, Pipermail, Apache, CVS etc. they all create pages that are not ISO 8601 compliant. Tobias Conradi (Talk) 04:48, 1 February 2007 (PST)
I choose "Tobias Conradi" as user name but it was corrupted by the LF-wiki to "Tobias conradi". Also on login when providing "Tobias conradi" and a wrong password, it is further corrupted to "tobias conradi". This is not so on the mediawiki as installed on wikipedia. Tobias Conradi (Talk) 04:51, 1 February 2007 (PST)