If you updated to 10.6.7 then you should (go to your Apple menu at the far left and) check for updates.
There was a problem with some types of Fonts that has been fixed by the Snow Leopard Font update:
http://support.apple.com/kb/DL1377
However, always wait after an OS update (true of Windows too) and see if it causes any problems with 3rd-party software, etc. - PRIOR to updating your system 🙂 And always, always have a full, known-good backup before you update. Especially for any computer that is used for business purposes !
Last but definitely not least, you should know that Adobe CS2 is a Power-PC only application (circa G4 and G5 processors, before Apple moved to Intel processors), and requires Rosetta (PowerPC emulation).
So you should consider any CS2 application running at all, as fairly miraculous.
CS3 was released four years ago, and provided the first Intel-native ("Universal Binary") versions of the CS-suite applications.
Mac OS 10.6 only runs on Intel-based Macs (ie: Intel processor required).
If you are using Photoshop CS2 for any revenue-generating purposes, then it is (and was) incumbent upon you to properly allocate and budget for
upgrades and you should - nay, must - be running a more current version of the software. If your budget does not allow for newer Adobe CS, then you should have kept a legacy system that can run an older Mac OS, and understand that your workflow is living on borrowed time - and you had best keep several old Macs that can still run an older Mac OS and run your CS2 natively.
In no way shape or form is CS2 supported under Mac OS X 10.6 - certainly not in any official way by Adobe !
You could also be irate about not being able to use your 8-track tape player in your brand new car. I'm exaggerating but not too much.
Please read Adobe's response regarding CS3 (not CS2) and 10.6/Snow Leopard:
http://blogs.adobe.com/jnack/2009/08/adobe_snow_leopard_faq.html
With all of this in mind, you should know that your frustrations with Apple and the unsupported and not-recommended interaction of CS2 and 10.6 are misguided. Best of luck to you !