The "don't restart" check box has not been removed nor has the "don't send bug report" check box been removed. (otherwise that is news to me)

The browser comes up to send inforamtion to Xolox. (the cryptic page) The browser then should display a copy of the bug report in the main window. As you said this is not such a big problem as Xolox has crashed anyway... Reinstalling Xolox may help, but probably is not be worth the effort.