Spotlight keeps on indexing forever ?
Seemingly randomly, Spotlight indexing goes on and on…. seemingly forever. It was painful to hear the hard-drive cracking away in the background.
A quick search on Apple’s suport forums gave me the solution – add your bootcamp drive / partition to the exclusion list of Spotlight (in System preferences).
Indexing stopped instantly !

That solution didn’t work for me. The following method did work: http://guidovanoorschot.nl/how-to-fix-spotlight-when-it-keeps-indexing-n-mac-os-x-lion/