Paint.NET 2.6 Beta 1 released January 3, 2006
Change log:
* Fixed a crash under Windows 2000
* New "Curves" adjustment for editing the color curves of an image
* UI elements that are drawn on the image canvas are now visible if they go outside the canvas boundaries. This includes the nubs/handles for the Move tools, Line/Curve tool, and the selection outline
* Optimized Move Selected Pixels tool: its history data is saved in a background thread, it only has to save half as much as it used to, and it is now much more responsive as a result
* Optimized performance and memory usage of Paintbrush, Eraser, and Pencil tools
* Optimized performance of Paint Bucket and Magic Wand tools
* Optimized startup performance
* Mouse wheel zooming now centers on where the mouse is located
* Mouse wheel zooming is now more granular/smooth
* Line/Curve Tool 'nubs' can now be hidden by tapping the Ctrl key
* Pressing Enter or Esc now finishes a selection with the Move tools
* Fixed a Paintbrush Tool crash
* Fixed a Rotate/Zoom bug
* Fixed many bugs related to scrolling and zooming
* Fixed some layout bugs related to the Layers form
* Fixed some keyboard/mouse input and focus issues with the toolbars
* Fixed printing transparent regions showing up as black instead of 'transparent' (white) on paper
http://www.eecs.wsu.edu/paint.net/