title: Powershell runs all external commands in a new window, omitting output
body: <p>As described in the subject, my powershell environment is executing all external commands in separate windows. In a typical test run of my team's build script, this includes things like:</p>
  
  <ul>
  <li>nuget.exe running for each project in a sln</li>
  <li>nunit test runners</li>
  </ul>
  
  <p>It's quite aggravating. The behavior actually prevents me from multi-tasking while running psake builds, since it grabs my mouse/keyboard focus whenever a new window appears/disapears. It also swallows valuable output from assorted steps in our build process.</p>
  
  <p>As per <a href="https://stackoverflow.com/questions/8181490/powershell-suddenly-opens-cmd-exe-for-executing-bats">Powershell suddenly opens cmd.exe for executing bats</a>, I checked $env:PATHEXT, but it is set up correctly (includes .EXE in its items, which are a semicolon-delimited list).</p>
  
  <p>I am the only member of the team seeing this behavior, and it appears to be associated with some global/roaming profile for my user, as it is still happening even after I re-imaged my machine.</p>
  
  <p>Any help would be greatly appreciated and I can provide additional info upon request.</p>