Apple last week released two security updates, version 1.1 of Security Update 2007-005 (see "Security Update 2007-005 Released," 2007-05-28) and Security Update (QuickTime 7.1.6). As of this writing, Apple had said nothing about what was fixed in the 1.1 version of Security Update 2007-005, but the QuickTime security update fixes two issues in QuickTime for Java that could result either in arbitrary code execution or disclosure of sensitive information. That sounds similar to the security fixes in QuickTime 7.1.6 itself from earlier this month, but it seems to be different (see "QuickTime, AirPort, Security Updates Released," 2007-05-07). In either case, both updates are likely worthwhile. Downloads for Security Update 2007-005 1.1 are available in PowerPC (15.7 MB) and Universal (29.2 MB) forms, and Security Update (QuickTime 7.1.6) is a 1.4 MB download. Or just use Software Update to get the appropriate version for your Mac.
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Using Keyboard Commands While Screen Sharing
In Snow Leopard, screen sharing now properly transfers all keyboard commands to the remote server. For example, the Command-Tab application switcher switches applications only on the remote system's screen.