Mozilla's latest version of Firefox addresses a critical security flaw that was recently discovered at the 2010 Pwn2Own contest by security researcher Nils of MWR InfoSecurity. The flaw, which existed only in version 3.6 and later, was related to memory corruption via "re-use of a freed object due to scope confusion," and could have led to an attacker running arbitrary code on a victim's computer. (Free, 19 MB)
Springy Dock Tricks
If you drag a file and hover over Dock icons, various useful things happen which are similar to Finder springing. If it's a window, the window un-minimizes from the Dock. If it's a stack, the corresponding folder in the Finder opens. If it's the Finder, it brings the Finder to the foreground and opens a window if one doesn't exist already. But the coolest (and most hidden) springing trick is if you hover over an application and press the Space bar, the application comes to the foreground. This is great for things like grabbing a file from somewhere to drop into a Mail composition window that's otherwise hidden. Grab the file you want, hover over the Mail icon, press the Space bar, and Mail comes to the front for you to drop the file into the compose window. Be sure that Spring-Loaded Folders and Windows is enabled in the Finder Preferences window.
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