As you all certainly already know, Opera is currently giving away registration (today until I don't know), so I gave it another try. Version 8.0.2 for Mac OS X. And to my surprise, they support now fully XMLHTTPRequest, or at least the part LiveSearch needs :) Cool. I updated the LiveSearch Wiki page accordingly. And the Flux CMS admin also almost works with Opera 8, some CSS issues, but they could be solved, at least the JavaScript part isn't an issue anymore.