title: Eclipse CDT shows errors before project is built
body: <p>I am having a minor problem with Eclipse CDT Juno. </p>
  
  <p>When I open up Eclipse for the first time, it will show many C/C++ Problem errors which put red x's on all of my projects. Many of these errors are "no such file or directory" errors for #include'd header files. However, after I clean and rebuild my projects, all of the errors go away.</p>
  
  <p>I have double checked all of my indexer settings, and the index paths are pointing to the right place. I also believe the indexer is setup correctly because after a build, all of the "no such file or directory" errors are gone, and I can navigate through the source code without any red x's.</p>
  
  <p>I have also tried Index->Rebuild and Index->Freshen All Files, but the only thing that will clear the errors is a clean/build.</p>
  
  <p>I feel that I shouldn't have to rebuild all of my projects every time I open Eclipse. Any thoughts???</p>