<p>It's in the air, big changes are afoot. Yeah, tech stocks remain in the toilet, but underdog companies and technologies are beginning to make significant inroads, and the established superpowers are feeling less secure every day. Is this news? Not really, because it's been happening slowly over time, and certainly many ET readers have been closely following and even promoting these changes. Big power shifts are underway. The signs have been subtle and cumulative, but the one that put me over the top was IBM's recent national TV ad pushing their enterprise Linux solutions in a big way (more fervently than any past IBM ads I can remember).</p>