People running Mac should think before upgrading to the next version of the Mac OS X, Snow Leopard, which is going to be released tomorrow. Adobe has confirmed that Adobe CS4 is fully compatible with this new OS and that it will run smoothly on it, however, Adobe has not run a compatibility test for the previous version CS3 and will not be supporting any bugs which could be appear on this OS. That is not to say that CS3 will not run on Snow Leopard, but don’t be surprised if it doesn’t. People still running Adobe CS3 should wait and hear other people’s feedback before making the jump. Others on CS4 have nothing to worry about.