When trying to get search working correctly, the full crawl on our sharepoint2010 server kept coming back with “Access is denied. Check that the Default Content Access Account has access to this content, or add a crawl rule to crawl this content”.  This error is due to MS implementing a loopback check to prevent reflection attacks.  To disable the loopback check, do the following:

1. Open Regedit
2. Navigate to HKLM\CurrentControlSet\Control\Lsa
3. Create a new DWord (32-bit) value called DisableLoopbackCheck and set its value to 1
4. Kick off a crawl
5. Profit $$$