title: TFS - Files doesn't get check out for edit automatically when I edit
body: <p>I am using VS2010 SP1 and TFS Version 10.0.40219.417 
  Now what happens is that I attempt to type in a non-checked out file, and well, nothing happens. VS does not check out the file. I have to manually check out the file for check in.</p>
  
  <p>It's happening with me only. On my colleague system it's working fine. I have cross checked all the settings he has done in his VS2010. Please suggest what should I do ?</p>