Finally found the first hardware device that Snow Leopard breaks: The HP LaserJet P1005 printer. Using Bonjour on an AirPort express on two separate machines the same cryptic "
Error:-9672" error message. Apparently others are having a similar problem
So far this,not being able to play Matroska video files reliably and some weird font smoothing have been the only problems for me with the Snow Leopard system software. Still it means I'll have to walk to uni to print stuff. As an early adopter I deserve this of course.