This update contains the following changes:

New: Auto opening of exported PDF documents was extended, so that you can choose to open in PDFClerk, Preview or Adobe Reader.
New: On Mac OS X 10.6 PDFClerk supports iChat Theater sharing of PDF files.
Fixed: Implemented workaround for bug introduced in Mac OS X 10.6 (Snow Leopard) that could slow down or even freeze PDFClerk in certain contditions after opening very large documents.
Fixed: Resolved an issue in Mac OS X 10.6 (Snow Leopard) that caused the page to rotate, instead of the page object when trying to rotate the object.
Fixed: Annotation ordering now works correctly on Mac OS X 10.6 (Snow Leopard).
Fixed: Resolved issue with width stepper in placement inspector when dealing with objects that constrain their proportions.
Fixed: Flipping even/odd columns in an imposition template flipped the wrong column.

Direct Download link:
http://sintraworks.com/media/PDFClerkPro3_9_1.zip