Yesterday DSP came with his MacBook to reinstall Microsoft Office to solve a bug as instructed by "experts" at Applecare Australia. Long procedure to uninstall, and after reinstalling, a longer time to download and install all updates. And finally, at the end, his problem remained. His issue was that even after he releases the SHIFT key, the next letter would be capitalized. Now, this is actually a "feature" of Mac OS X Lion, carried over from iOS - demonstrated by typing something in TextEdit. But it does create problems for those who type moderately fast.