While apps like Google Chrome and CrashPlan seem to have no trouble updating themselves automatically, Dropbox continues to stumble in that area. If your copy, like ours, hasn’t updated (hover over the Dropbox icon in the menu to see the version in a tooltip), you might want to download Dropbox 1.6.0, which promises faster startup times for users with lots of files, improved overall performance, and improved Web login from the Dropbox client app. The update also features new icons that will look good on Retina displays, a new installer that doesn’t require that you quit the older version first, and translations for Italian and Iberian Spanish. Or just wait — Dropbox might update itself eventually. (Free, 23.1 MB, release notes)
Mac OS X Zip Expanding Utility
Firefox (and possibly other applications) may ask you what you want to do with .zip archives that you download from the Internet. If you want to expand them with Mac OS X (rather than StuffIt Expander), you may be unsure of which application actually does the job. You're looking for Archive Utility (in Leopard and later) or BOMArchiveHelper (in Tiger). In either case, the application is stored in Hard Drive/System/Library/Core Services/. Don't move it from there, though, or you'll confuse matters.
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Note that the post says, "Since it's a Holiday here in the US and we're all gonna be eating Turkey for the next couple of days we will not be auto-updating or posting this to the front page until after we get back. But if you're having any kind of problems with 1.6.0 this is the build for you."
I personally think Dropbox should just enable manual upgrades from within the client app - that way those who want the fixes can get them without having to hunt through random blog posts on the Dropbox site or wonder why they don't have the same version as Dropbox is distributing on its main page.