With every fresh install of windows I am greeted with this message when I stop and think with the shift key firmly pressed down.

Its rather annoying, kind of breaks up your train of thought too.

To disable this wonderful feature few people use hit your windows key and type "ease of access" press enter(control panel->ease of access).

Now select Make the keyboard easier to use.

Select Set up Filter keys ( looks like a link.)

Uncheck Turn on Filter Keys when right SHIFT is pressed for 8 seconds.

Click Save.