WordPress MU

Is there any good plugin to search across all blogs?

I started with the following ages ago

http://wpmudevorg.wordpress.com/project/GT-Search-All-Blogs

I don't know the state of the current code.

My current preference is to install a "tags" blog using Donncha's Sitewide tags plugin and use the normal search widgets.

I installed the post indexer plugin from premium.wpmudev.org and then wrote my own search code to sit on top of it.

The plugin http://wpmudevorg.wordpress.com/project/GT-Search-All-Blogs does seem to work as far as searching across all blogs, but it generates default links
i.e. /blog/?p=123 so any permalinks fail. :-(

I worked on upgrading the wpSearch plugin to work with WPMU - the result is at http://welcome.totheinter.net/wpsearchmu/

It uses Lucene for the search backend, so results are typically more accurate than default WordPress search results. And each blog's search page can be customized to search all/some/one blog.

Hope this helps!

Doesn't help though with the Thesis theme? any tips or help to search accross all blogs with the Thesis theme.