title: F12 finds all references, not go to definition
body: <p>Lately my F12 key does not seem to be working as expected in Visual Studio 2010 Professional SP1. It should go to the definition of what is selected, but instead it's performing the find all references task - Ctrl+K, R. </p>
  
  <p>Does anyone have any ideas how I can fix this? It is getting quite annoying as I routinely use this shortcut - I am working on a large solution where it sometimes locks visual studio briefly trying to find all references.</p>
  
  <p>I have tried going to Tools -> Options -> Enviroment -> Keyboard -> Reset with no success.</p>
  
  <p>One other thing: it only does it sometimes and I am yet to distinguish a pattern when it does and does not work as expected.</p>
  
  <p><strong>Edit:</strong>
  One thing I forgot to say is that when it does not work, the second time I press F12 it does take me to the definition, it's just the first press that finds all references.</p>