title: Undefined symbols for architecture armv6, Updating to iOS 4.3
body: <p>I am patching upp an application from iOS 4.2 to 4.3 using new xcode4.
  With no changes made, except setting iOS to 4.3, I created entitlements and go!</p>
  
  <p>Message I get is:</p>
  
  <pre><code>Undefined symbols for architecture armv6:"function", referenced from:
  </code></pre>
  
  <p>Ive tried to Clean the project, reinstalling xcode. 
  I uninstalled also the xcode4 demo version.
  I also tried to set to Optimized armv7.</p>
  
  <p>I would be very happy for some help, I'm stuck. Really.</p>
  
  <p>Thanks very much in advance! </p>