Apple released Security Update 2012-001 for Snow Leopard on 2/1/12. This security update broke Rosetta, causing a wide variety of problems with older PowerPC based applications including random crashing and the inability to print and save (especially with Office 2004 and Adobe CS2 apps).

Apple fixed this problem on 2/4/12, and they posted a new v1.1 of the Security Update 2012-001.

If you are running Snow Leopard, and applied this security update prior to 2/5/12, it would be a good idea to download and re-apply v1.1 of Security Update 2012-001, regardless if you’re experiencing problems or not.