title: Error with iOS 5.1 when i use ASIHTTPRequest and SBJSON
body: <p>i am getting this error:</p>
  
  <pre><code>Undefined symbols for architecture i386:
    "_OBJC_CLASS_$_ASIHTTPRequest", referenced from:
        objc-class-ref in FirstViewController.o
    "_OBJC_CLASS_$_SBJsonParser", referenced from:
        objc-class-ref in FirstViewController.o
  ld: symbol(s) not found for architecture i386
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>Note i have added the frameworks core graphics,system configuration,mobile core services,libz.dylib,libz.1.2.5.dylib,CF Network,UI Kit and Foundation.
  I have searched all the forums and spend almost 4 days but just don't find the cause.</p>
  
  <p>When i comment my ASIHTTPRequest and SBJSON  code lines,it works fine.
  I have added all the classes for ASIHTTPRequest and SBJSON and checked thrice.
  Could anyone suggest what am i doing wrong?</p>