How to stop "clean project" process in Android Eclipse?

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http://stackoverflow.com – I've been following the developer.android guide to building a first project. However, the result seems to be incredibly buggy. I've rechecked my code and wasn't able to find any errors, so I followed several suggestions to try "clean project". However, this "clean project" process seems to never terminate. Ever since I clicked on it, Eclipse has been using ~70% of my CPU every time I load Eclipse. Additionally, Eclipse itself has been running slow. It takes over ten seconds to load a simple file from the package explorer menu. is there any way to stop "clean project"? I've tried googli (HowTos)