title: Vmware powercli on win2008r2 get-stat empty "string"
body: <p>when I am getting statistics from ESXi using vmware powercli on windows7 it gives me responce
  <strong>Wondows7</strong>
  command: PowerCLI C:\temp> </p>
  
  <pre><code>Get-VMHost -Name "hostname.inc.com" | Get-Stat -Stat
   cpu.usage.average  -Start (Get-Date).AddDays(-1) -Finish(Get-Date) -MaxSamples 100
  </code></pre>
  
  <p>returns output</p>
  
  <pre><code>MetricId                Timestamp                          Value Unit     Insta
                                                                            nce
  --------                ---------                          ----- ----     -----
  cpu.usage.average       31.10.2013 15:40:00                25,03 %
  cpu.usage.average       31.10.2013 15:35:00                22,95 %
  cpu.usage.average       31.10.2013 15:30:00                23,97 %
  ...
  </code></pre>
  
  <p>when from 
  <strong>Windows2008r2</strong>
  command: PowerCLI C:\temp> </p>
  
  <pre><code>Get-VMHost -Name "hostname.inc.com" | Get-Stat -Stat
   cpu.usage.average  -Start (Get-Date).AddDays(-1) -Finish(Get-Date) -MaxSamples 100
  </code></pre>
  
  <p>returns "nothing"</p>
  
  <p>Interesting- if run on windows2008r2 
  command: PowerCLI C:\temp> </p>
  
  <pre><code>Get-VMHost -Name "hostname.inc.com" | Get-Stat -Stat
   cpu.usage.average  -Realtime -MaxSamples 100
  </code></pre>
  
  <p>it gives responce</p>
  
  <pre><code>cpu.usage.average       10/31/2013 9:49:40 AM               9.77 %        30
  cpu.usage.average       10/31/2013 9:49:20 AM               8.63 %        30
  cpu.usage.average       10/31/2013 9:49:00 AM              12.05 %        30
  cpu.usage.average       10/31/2013 9:48:40 AM               11.5 %        30
  cpu.usage.average       10/31/2013 9:48:20 AM              14.25 %        30
  cpu.usage.average       10/31/2013 9:48:00 AM              11.02 %        30
  cpu.usage.average       10/31/2013 9:47:40 AM              11.77 %        30
  </code></pre>