How come there's no search feature in the archives @ Project:Support desk?! (or here at Project:Current issues, for that matter)
You can watch such a thingy in action at WikiPedia. IMO, this is very useful, and i quite miss it here on MediaWiki.
Later edit: I guess this might be related with the new "LQT"/"Flow" design. Choosing eye-candy vs functionality, very well done. :-|