title: Visual Studio 2012 is slow when selecting items in the solution explorer
body: <p>After having installed "Visual Studio 2012 <strong>Update1</strong>" some new buttons have been added, but unfortunately Solution Explorer has become incredibly slow. All mouse events on it (click, right click, double-click, on either the toolbar or any item) requires 5-10 seconds before having an answer.</p>
  
  <p><em>After having un-installed update1 speed returned normal</em>(=immediate).</p>
  
  <p>Maybe one possible cause is one of the new buttons added, maybe "Show on Code Map".
  Unfortunately I can find no way to customize (remove buttons from) Solution Explorer Toolbar; there is no "Show on Code Map" extension installed.
  I have no ideas on how to investigate further.</p>
  
  <p>As at least one guy got the same problem (<a href="https://stackoverflow.com/questions/15387146/visual-studio-2012-is-slow-when-selecting-item-in-the-solution-explorer">here</a>) maybe someone has the solution or ideas on how to further investigate.</p>
  
  <p>Thank you
  Stefano</p>
  
  <p>Using:
  Microsoft Visual Studio Ultimate 2012
  Version 11.0.51106.01 Update 1</p>
  
  <hr>
  
  <p>UPDATE:<br>
  Microsoft released Visual Studio 2012 <strong>Update 2</strong>;<br>
  now, with Update 2 installed, everything has returned 'normal speed',<br>
  so this question can be considered closed/obsolete. :-)</p>