From BlenderWiki

Please read through this document before reporting bugs for the 2.5 branch.

[edit] Bug reporting

Blender 2.5 is a work-in-progress, most parts are now ready for testing and reporting. This section will clearly list the known issues (todo items) for which you don't have to report on yet.

Also respect the bug reporting guidelines on the bug submission page! A good bug report tells the simplest way for someone else to reproduce the problem.

• 2.5 Bug Tracker
• Submit New Bug
• Testing binaries: no official ones yet, check http://www.graphicall.org for daily builds.

[edit] Short-term target

The first beta release of Blender 2.5 will concentrate on restoring functionality from Blender 2.4 in the new architecture. Further releases will continue developing and expanding upon new 2.5 features.

[edit] What not to report

• Keyboard shortcuts are mostly temporary at this point.
• User expectations ("I would expect this to work...") - unless you have evidence it should work (it worked before, or code is supposed to work).
• Crashes when running out of memory

[edit] Categories for testing/reporting:

[edit] Tools

• Game Engine, physics
• Render
• Editing Meshes, Sculpting, Particles, and so on
• Animation System

[edit] User Interface

• Blender's window/area manager
• Events, keys, undo, widgets, history, tool redo

[edit] Editors

• Capabilities of individual editors
• 3D View, Image Editor, Node Editor, ...

[edit] Scripting

• Creating Interfaces
• Extending and configuring Blender
• Plug-ins

[edit] Building Software

• Anything related to developing or creating Blender binaries for all platforms

[edit] Installation, Environment

• Windows, Linux, OS X related
• OpenGL graphics, sound
• CPUs, devices, ...