Fix very rare issue where Dropbox wouldn't start on Windows.
Fix Selective Sync not working on Windows 8 Developer Preview.

- Security enhancements, an attacker will not be able to steal your computer's account credentials just by copying configuration files to another machine.
- New encrypted database format to prevent unauthorized access to local Dropbox client database.
- Enhanced Lion integration

Integration support for Mac OS X Lion 10.7

Backport a fix from 1.2.x to a rare issue (from 1.2.x) where certain Mac OS X machines wouldn't upload files automatically.

Backport a fix from 1.2.x that caused the tray menu to become unresponsive on certain Linux machines.

1.1.34 (5/20/2011):
* Small bug fixes

1.1.31 (5/3/2011)
* Finishing touches

1.1.29 (4/30/2011)
* Linux: Fix missing appindicator icon at startup
* Small stability fixes

1.1.28 (4/25/2011)
* Tiny stability fix.

If you can read the above you're in luck. The Dropbox client is now translated to your language!
And the build is now stable!

1.1.25:
o Another very small fix

1.1.24:
o Fix missing tray icon in Windows 7 64 bit.
o Other small fixes.

1.1.23:
o Translations for Latin American Spanish, French, German, and Japanese
o Redesigned Preferences UI
o OSX: New notification interface for users that don't have Growl installed.
o Stability Fixes

Windows: http://dl-web.dropbox.com/u/17/Dropbox%201.1.25.exe
Mac OS X: http://dl-web.dropbox.com/u/17/Dropbox%201.1.25.dmg
Linux x86_64: http://dl-web.dropbox.com/u/17/dropbox-lnx.x86_64-1.1.25.tar.gz
Linux x86: http://dl-web.dropbox.com/u/17/dropbox-lnx.x86-1.1.25.tar.gz

What's New in version 1.0.20:

* Fixed exclude CLI command to work on Shared Folders.
* Small tweaks.

Fix for OSX when Home Directory is on AFP share.

We’re super excited to announce the new hotness that we’ve been cooking up for the past few months: Dropbox 1.0! In addition to hundreds (yep, hundreds) of bug fixes, vastly reduced resource usage (think of it as the Prius model of Dropbox), Dropbox 1.0 (“Rainbow Shell”) also offers support for extended attributes, selective sync, and a shiny new installation wizard. Those are just the CliffsNotes though — here’s the true story behind Dropbox 1.0:

Our highest quality yet – When you’re shipping software to millions of people, a problem that affects even 1 out of 10,000 is a big deal. And the most important feature of any file syncing software is that it just works. This release represents thousands of hours fixing problems people should never have to think about: invalid file names on Windows, weird Unicode normalizations, Word and Excel file locking, abnormal symlinks hierarchies, case sensitive file systems on Mac, TrueCrypt support, …the list goes on. Whether you’re using Dropbox for work, school, or play, we’re confident that today’s Dropbox offers the best file sync experience out there.

Huge performance enhancements – Dropbox 1.0 is strong enough to sync your entire digital life yet still lightweight and fast. We completely re-architected the client-side sync engine to optimize the response time, scale, and resource consumption. Keeping track of millions of files can require lots of memory if not done properly. This version reduces memory usage by up to 50%. It’s speedier and more efficient when handling big changes to your Dropbox while ensuring that smaller changes remain quick.

Better user experience – We’ve completely redesigned our initial setup wizard on all three platforms to make it easier to get started using Dropbox. The preference menus are more organized, intuitive, and snazzy. We’ve also rewritten our Mac OS X version to only use Cocoa so Dropbox looks and feels much more native on the Mac. This also brings down the Mac download size by 20%

Selective Sync – If you have a netbook or a computer with a tiny hard drive, syncing your entire Dropbox isn’t always a great idea. You also might not want certain files on your home computer to pop up on your work computer. Selective Sync solves these problems! You now can choose which folders get downloaded to which computers. This saves you time so you don’t have to sync stuff you don’t need. To learn more, head to our help center.

Extended Attribute Sync – Syncing resource forks have historically been a pain for Mac users. In case you don’t know, resource forks are a secret area of a file that certain applications (like Quicken, Quark, and OmniGraffle) use to store important data. Most sync programs today completely ignore these forks, which results in a corrupted file on the other end. But worry not! Resource forks and other extended attributes now work great with Dropbox. Hooray!

1.0 is a milestone for us, and with it we want to communicate our confidence that Dropbox is stable, high-quality software. The service has grown from a simple sync app to something that’s changed the way lots of people work and communicate. But just because this version of Dropbox has a new number doesn’t mean that we’re anywhere close to finished. We have a long way to go before we realize our goal of making it easy for everyone to always have access to their stuff. Stay tuned for more!

• memory usage reduced by up to 50%
• rewritten using on the Cocoa framework, reducing download size 20%
• selective sync!
• support for syncing resource forks and extended attributes
  

• Flicker free plan selection when you first link a host
• Fix for tiny race condition when renaming folders on Mac
• Potential fix to some cases where Mac wouldn't detect local changes made to your Dropbox

This build features many bug fixes, stability and performance improvements, Windows non-admin install support, and better support for Windows 7/Snow Leopard

• Much better symlink support on Mac OS X, tell us if you are still running into any problems
• New experimental uploader, please let us know if you are getting better upload speeds.
• Syncing should be much faster for small files.
• Fixes for not syncing pptx/docx files and itunes libraries on the Mac. (Thanks Jeff B, Richard!)
• Fixes for some problems that require a restart of Dropbox to get files to sync.
• All license requirements should now be met for our linux version.
• Lots of other tiny fixes.

• Symlinks now work much better on Mac OS X
• Fixed problem where many users weren't seein icon overlays on Mac OS X (let us know if they come back)
• Errors during synchronization (permission denied, read only filesystem) are more robustly handled.
• Upload status should be slightly more accurate.
• Fixed regression on Windows that would sometimes cause syncs to fail. (Thanks Chen!)
• Fixed bug that would cause some clients with bad folder permissions to download indefinitely.
• Potential improvements to upload speed for int'l users (let us know if it helps!)
• Potential memory usage improvements (let us know if it helps!)
• Updated icon overlays for windows
• Lots of other little fixes.

• Symlinks now work again on Mac OS X
• Fixed a bug surrounding incomplete syncs requiring restarts
• Fixed regression in 0.6.425 that causes clients to commit spurious deletes in the case that downloads are interrupted

• Fix a segmentation fault on linux that was preventing Dropbox from starting for many users
• The obligatory and mysterious "more minor bug fixes"

release notes not available at developer site nor in download at the time of this posting