Main Features
Download It
If you already have Ubiquity, it will automatically update itself soon (you can also go to the add-ons manager and click "Find Updates" if you are feeling impatient). If you don't already have Ubiquity installed, you can get the latest version of Ubiquity here.
Thanks
Thanks to the awesome Ubiquity community on ubiquity-firefox and Get Satisfaction for bug reporting, testing, and eternal patience.
In Depth
The complete list of fixes for this release can be viewed at the Ubiquity 0.5.1 milestone