Hi,
I've recently checked Mediawikis output for XHTML 1.0 Strict compliance. The only error that is occuring all the time is border attribture to the wikimedia logo at the bottom of the page.
http://validator.w3.org/check?uri=http%3A%2F%2Fde.wikipedia.org%2Fwiki%2FNov...
<strike>I can't remember seeing other validation errors besides this one in the W3C validator.</strike>
http://validator.w3.org/check?uri=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FGeo...
9 erros.
There seem to be no tickets in the Mediazilla that refer to XHTML strict (http://bugzilla.wikimedia.org/show_bug.cgi?id=209).
Besides the more or less academic use of having XHTML strict output rather than XTHML Transitional, is it actually an achievable goal for our kind of output?
Mathias