As some of you have found out the search currently does not function. This is because I deleted the search index prior to upgrading. Right now I am reindexing the search table and it should be done in 10min and search should work again. Also the site might run a bit slower while it reindexes because it's a very server intensive process. Thanks for your patience!

Looks like it will take a bit longer, it's only 7% done.