Consider this a public service announcement: if you're in the market for a MacBook Pro, right now is about the worst possible time to buy one. Wait at least until this coming Thursday, February 24. Multiple indicators point to the MacBook Pro line being refreshed on that date. We heard in December that the MacBook Pro line will be upgraded in the first half of 2011, and the current lineup started seeing supply shortages in late January. Over the past couple weeks, we've heard from multiple sources that the