A fraudulent SSL certificate has been issued for some public Web sites belonging to Google by the certificate authority DigiNotar. Although DigiNotar has now revoked the fraudulent certificate, which should protect most users, it’s conceivable that users on a compromised network could be fooled into using a fraudulent Web site masquerading as a Google service. Because the extent of the problem isn’t yet clear, Mozilla has released Firefox 6.0.1 (along with updates to all other currently supported Mozilla software) to revoke trust in the DigiNotar root certificate, which you can also disable manually. There are no other changes, but it’s worth getting the update to avoid potential problems related to the fraudulent certificate. (Free, 28.1 MB, release notes)
Wake On Demand in Snow Leopard
Putting your Mac to sleep saves power, but it also disrupts using your Mac as a file server, among other purposes. Wake on Demand in Snow Leopard works in conjunction with an Apple base station to continue announcing Bonjour services that the sleeping computer offers.
While the requirements for this feature are complex, eligible users can toggle this feature in the Energy Saver preference pane. It's labeled Wake on Network Access for computers that can be roused either via Wi-Fi or Ethernet; Wake on Ethernet Network Access or Wake on AirPort Network Access for wired- or wireless-only machines, respectively. Uncheck the box to disable this feature.