[righthand] Various reports already published about this from the very first day of the launch of the Mac Os 10.6.7 update few weeks ago. Now, to confirm this bug: Apple recently proposed a patch to ccorect this problem who affect all .otf fonts:
See this support page: About the Mac OS X v10.6.7 Snow Leopard Font Update

? We recommend also to remove font caches with Font Finagler, version 1.5