Our technical support staff has put together a new document that collects the issues reported on this blog and Michael Coleman's blog about After Effects on Mac OS X 10.6 (Snow Leopard).
See "Known issues with Adobe After Effects CS4 in Mac OS X 10.6 (Snow Leopard)".

After updating to Snow Leopard my HP scanner (Photosmart C3180 All in one) does not let me choose the OCL feature for scanning documents. I need this back. Is there a driver I need to download?
Thanks,
Vickie Showalter
Vicki,
This seems like a question for Apple technical support. It doesn't seem to have anything to do with Adobe After Effects, which is the subject of this blog.
You have a great article! This will help a lot to those people who are in need of help and asking for an advice. Thanks.