Hi, I just updated Firebug to the new version 1.5.
Using this version I noticed that all ajax requests created by Wicket seem to abort. Firebug always shows "200 Aborted" and not "200 OK". You can use all ajax demos (http://wicketstuff.org/wicket14/ajax/) to reproduce it. And I don't think it is a bug in firebug, because other sites i've tested (facebook, jquery demo, mootools demo) return a "200 OK". cheers, Witold