For the Feb applicants that haven't received OWPs, don't worry - you're all still under four months. I agree that it's probably just up to which agent goes through their pile faster and I'm sure you'll all get it in the next couple of weeks. And you will get an email (I got two) when it's approved so don't worry about checking the website all the time.
Relax, you'll get it soon!
Relax, you'll get it soon!