Yep! I'm resitting it because I didn't do very well in the waves paper. Last year my planning and my practical were fine but I almost failed the waves paper. For all you doing AS this year, concentrate on waves because it is a major pain resitting the planning and practical as well as waves!
Apparantly this years AS practical is harder than the A2 one so good luck to all AS students (and students resitting like me!), and those doing just A2, think yourself lucky!!!