I just wanted to mention I've had no trouble with the Applescript 1.83 update, and haven't seen any reports of trouble on Macintouch or MacFixIt. Hopefully Cory's problems were a relatively isolated incident (which I'm sure doesn't help him feel any better about it).

I've played with the CodeTek virtual desktop a little bit, and it does answer one of Charlie Stross' specific complaints about Space.app: It allows a single application to have different windows in different workspaces.