Thread:Project:Support desk/intrusions from print.css in vector and monobook?

Here's something curious I can't quite wrap my head around. Lately I've been seeing elements on every page that look like they belong to print.css rather than the Vector or MonoBook skin I'm using.


 * at the top:  and
 * at the bottom of the page, a link beginning  followed by the URL of the latest revision of the page.
 * When categories are used, the links are not aligned as usual, but shown as a bulleted list. o
 * In the case of MonoBook, the MediaWiki logo and other footer stuff sometimes appears in the left sidebar rather than at the bottom of the page.

I've looked into caching, error reporting, removed system messages as well as other skins along with custom js / css pages, used different browsers, disabled all extensions, but nothing seems to work. Could anyone please point me in the right direction? There must be something ridiculously simple I'm missing.

(MW 1.23)