Search engine
Hi Martin
The general search uses the fields set in the "Default content fields" pref on the search control panel. It defaults to "contents, title" and "contents" is a collection of all the "global" text in an object, which for wiki pages includes the rendered page body, the description, title, date etc. So maybe that pref has been changed by mistake?
It is also affected by the "Field weights" pref just above it, so check both of those are set to their defaults (both of these settings are "advanced" so you need the switch at the top set to that and not "basic")
HTH
;){kind=link}
;){kind=link}