JustMichael - Just don't research and educate yourself alright? Then you can happily burn at "6x" while the rest of us snicker at you. Sheesh!
Man oh man, I hope everyone understands that burning is a multi-factorial event. However, anyone with real world experience burning cdrs - and not just people talking out the side of their neck - knows that burning speeds are a combination of your hardware/software/media setup. If you have good hardware like a Yamaha or Plextor and have a stable system with happy drivers communicating nicely between your hardware and OS as well as decent software like Nero then you can get away with max speed burning even crappy media like Ritek, CMC or Gigastorage.
Furthermore, Kodak media is top quality media. Did you know that the state of the nation with regards to media is this:
quality media in the last five years (Kodak, Mitsui, Kao, TDK, Taiyo Yuden ...) have been badged and rebadged as time went along without change in the formulation? From 6x compatible to 8x, 12x and beyond? Hell, TDK does away with the change in packaging by saying "All speed compatible" so they don't have to change their wrapper!
Granted, with the super high speed burners available to industry folk running at 24x you need special media that can handle the burning process re: cdrecordable.com - that is a different story as well as with cdrw technology.
Clear?
Conclusion: YES, you can burn beyond 6x ... depending if your hardware/software setup will allow for it ... which is the case for most of us here.