Well I'm an idiot - the fulltext index on page_text was missing from a default installation. It didn't break searches but probably slowed them down tremendously. Also set engine to MyISAM on page_text to avoid cryptic error messages from MySQL.
/* CSS file for advimage plugin popup */
.mceLinkList, .mceAnchorList, #targetlist {
width: 280px;
}
.mceActionPanel {
margin-top: 7px;
}
.panel_wrapper div.current {
height: 320px;
}
#classlist, #title, #href {
width: 280px;
}
#popupurl, #popupname {
width: 200px;
}
#popupwidth, #popupheight, #popupleft, #popuptop {
width: 30px;
vertical-align: middle;
text-align: center;
}
#id, #style, #classes, #target, #dir, #hreflang, #lang, #charset, #type, #rel, #rev, #tabindex, #accesskey {
width: 200px;
}
#events_panel input {
width: 200px;
}