SE 5 works fine for me, but I noticed today that in the page with the search results one of my sixteen widgets is gone, namely the standard "new articles" widget. The funny thing ist that all other page calls (via title, tag, date, follow-up pages etc.) work fine, the new articles widget only disappears when a search is done and the results are displayed. Toggling SE 5 on and off shows that the plugin is responsible for that strange behaviour. Please get it fixed in the next release!