Our research team has 2 well working surveys for a couple of weeks now, but we are experiencing problems since this morning: the first question page just keep reloading when we click "Next". We didn't change anything. Both surveys are based on the ubuntu orange template.
Who is we? Are you doing your own server? Is hosting outsourced? Could be a lot of things.
First step would be a link to a demo survey or the actual survey to check things.