I can assure you, Peter Mayhew is doing just fine and dandy. =) David Prowse, on the other hand, has had a pretty bad week.
Well, nobody's really sure, but apparently, he was at a convention and started having horrible pain, and had to be taken to a hospital. For a while he didn't have the use of one of his arms, although doctors said it wasn't a stroke. Apparently, he's better now, but it sounded pretty nasty.