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)
Expose Shortcut for View All Windows
In Expose mode in Snow Leopard, press the Tab key to view all windows belonging to one application (equivalent to pressing F10 or Control-F3 on recent laptops). Press Tab again to switch between applications while remaining in Expose. You can also click an icon in the dock.
Set up short abbreviations which expand to larger bits of text,
such as "Tx" for "TextExpander". With the new custom keyboard,
you can expand abbreviations in any app, including Safari and