Update to 2.8.2

Highlights
* New drag-and-drop widgets admin interface and new widgets API
* Syntax highlighting and function lookup built into plugin and theme editors
* Browse the theme directory and install themes from the admin
* Allow the dashboard widgets to be arranged in up to four columns
* Allow configuring the number of items to show on management pages with an option in Screen Options
* Support timezones and automatic daylight savings time adjustment
* Support IIS 7.0 URL Rewrite Module
* Faster loading of admin pages via script compression and concatenation

For all the details see: http://codex.wordpress.org/Version_2.8

(adrianp)