When writing a text document, I usually use the command key to skip whole sentences, or more than one word. A few days ago the command key stopped working that way, and will now only work with shift (as in selecting, and not skipping, text). This has become irritating, because the 'skip' function is almost wired into me, due to my using it for years. Have anyone experienced the same, and is there a way of fixing this? I use a MacBook Pro from 2009, running Lion (10.7.2) The processor have 2.26 GHz, and I have 2GB RAM.