title: Android ADB didn't ack issue in eclipse
body: <p>I have spent around 5 hrs on this problem. I have read the same question on stackoverflow, but none of the solutions solved my problem...
  <strong>First, it gives me:</strong> </p>
  
  <pre><code>[2013-02-28 14:48:21 - adb] ADB server didn't ACK
  [2013-02-28 14:48:21 - adb] * failed to start daemon *
  </code></pre>
  
  <p>To solve that, I kill the adb.exe in task manager, restart eclipse. Then go to DDMS, reset adb. NO LUCK...</p>
  
  <p><strong>Then, I go to command line window, type <code>adb kill-server</code> and <code>adb start-server</code>, it gives me:</strong></p>
  
  <pre><code>adb server is out of date. killing...
  ADB server didn't ACK
  fail to start deamon
  </code></pre>
  
  <p>Now I don't know what to do. I have a project to develop on eclipse, so really need to solve this problem soon. Someone please help!!</p>
  
  <p>(As many solution indicated, I killed my adb.exe thousands of times, but it showed up immediately in task manager after 2 seconds. )</p>