If it feels like your portfolio has been over uh run over this week by Mac Truck, well, I'm here to say two things. One, it may be Thursday, but the trading week is still young. So, hang in there.And two, if you own a lot of software stocks, ask yourself why. Because the selloff is getting darn ugly. I'm Yahoo Finance executive editor Brian Sazy and this is opening bid live from Yahoo Finance's New York City headquarters.Here's what else is on my mind right now. Qualcomm's guidance stunk and the sell-off is ...