Mozilla has released Firefox 6.0.2 to remove additional DigiNotar-issued SSL certificates. According to a Mozilla blog post, DigiNotar, the Dutch certificate authority that was used by an Iranian hacker to issue fraudulent SSL certificates, also issued some certificates used by the Dutch government. The Dutch government’s initial assessment indicated that those certificates were still trustworthy, so Mozilla exempted them from Firefox 6.0.1’s removal of DigiNotar root certificates. After an audit of DigiNotar, the Dutch government rescinded that initial assessment of trust, so Mozilla has now removed all DigiNotar certificates from Firefox. Google has updated Chrome (which happens automatically), and Apple has now released Security Update 2011-005 to protect Safari users (it’s also possible to excise the DigiNotar certificates from your base keychain if you’re not yet in a position to apply Apple’s update). Firefox users should update to 6.0.2 to avoid the real-world exploits based on these fraudulent certificates. (Free, 28.1 MB, release notes)
Go Back and Forth Fast in Preview
If you're reading a PDF in Apple's Preview software, and you follow a bookmark or an internal link to move around within the PDF, you can quickly return to where you were by pressing the keyboard shortcut Command-[ (that's Command-Left Bracket). Or, you can choose Go > Back.
The command works iteratively, so you can go back to just the previously viewed page or if you issue the command again, to the page before that, and so on. There's also an equivalent Go > Forward (Command-]).