Apple releases Snow Leopard font update for OpenType/PDF issues
Apple just released the Snow Leopard Font Update. This fix addresses bugs encountered with OpenType fonts when displaying and printing documents. According to Apple, the bug fix will
Address an issue in which some OpenType fonts don't display correctly in certain applications
Resolve issues printing from Preview
Address an issue with PDF files not opening in third-party PDF viewing applications
Resolve invalid font errors when printing to PostScript printers
The update is being distributed through the standard OS X Software Update mechanism, so check Apple > Software Update... on your Mac.
We reported on the font troubles and on a temporary/unsupported fix.