Finally!
Posting it to make sure I can find it again in the future... one of my favorite hacks of all time.
Ever get annoyed at the delay when a call ends and find yourself pressing the 'End Call' button over and over again?
Well no more!
Create the following DWORD value:
HKEY_CURRENT_USER\ControlPanel\Phone\
CallProgressIdleTimeout = 1000
I set mine to 1000 (milliseconds) because I want it gone fast. You can set it however you like.
Enjoy!
Caution: Can be a wealth of info, or make your brain hurt:
http://msdn2.microsoft.com/en-us/library/