Camera bug

Hi all,
I have fairly recently started using blender, but have noticed that sometimes when i try to reposition the camera with shift + 0, something odd happens and i actually end up inside another object rather than repositioning the camera to where i am looking, i noticed this happened in one of greybeards tutorials (i cant remember which one). Is there a workaround to get this working again within the project?
Many thanks for any help
Fogma

FOUND SOLUTION IN ANOTHER THREAD…
http://blenderartists.org/forum/showthread.php?t=135179&highlight=camera+bug

sorry found answer to the problem in this thread…
http://blenderartists.org/forum/showthread.php?t=135179&highlight=camera+bug

Yep, Alt+0 restores previous camera. Just for future reference, this command as well as many more can be found within Blender’s own help menu. Help --> hotkey and mouse actions —> numpad.

Welcome to the forum.