Splitter view layout is now preserved from session to session.

Dialog bars now pop to the top when the mouse cursor floats over them.

No longer renders the 3D views when the editor is not the active application. (This will fix most people's problems with running Hammer and Half-Life at the same time causing the editor to freeze)

Added Copy to Clipboard button to the process window.

Sped up time to bring up the Face Properties dialog when many brushes are selected.

Sped up 2D view scrolling.

Added timed selection of objects by depth in the 3D view when the left mouse button is held down.