Adobe has updated Acrobat XI and Reader XI to version 11.0.02 solely to improve the security of the two apps. The updates address critical vulnerabilities in versions 11.0.01 and earlier, vulnerabilities that could enable an attacker to take control of your system (detailed over at The Next Web). The update for Acrobat XI is just 11.9 MB; meanwhile you can choose between the delta updater (25 MB) or the full installer (76.6 MB) for Reader XI. Additionally, Adobe recommends that users of older editions of Acrobat and Reader update their software as well, with Acrobat getting version 10.1.6 (13.5 MB) and version 9.5.4 (10.8 MB). If you can’t update to Reader XI 11.0.02, you can similarly choose version 10.1.6 (17 MB) and version 9.5.4 (5.4 MB for Intel, 5.6 MB for PowerPC). ($449 new for Acrobat XI Pro, free updates)
Mac OS X Services in Snow Leopard
Mac OS X Services let one application supply its powers to another; for example, a Grab service helps TextEdit paste a screenshot into a document. Most users either don't know that Services exist, because they're in an obscure hierarchical menu (ApplicationName > Services), or they mostly don't use them because there are so many of them.
Snow Leopard makes it easier for the uninitiated to utilize this feature; only services appropriate to the current context appear. And in addition to the hierarchical menu, services are discoverable as custom contextual menu items - Control-click in a TextEdit document to access the Grab service, for instance.
In addition, the revamped Keyboard preference pane lets you manage services for the first time ever. You can enable and disable them, and even change their keyboard shortcuts.