In eight years I've only got one single record of a timing problem where the payday was delayed that was not announced ahead of time.
What's really interesting is that ever since that one unannounced problem, there has been one specific HubPages user who has chosen to post every single month ahead of payday, casting doubt and hinting that there may be a problem when in fact, there is not.
I would like to politely ask that those who choose to be critical and/or sarcastic please refrain from posting on my forum questions. Since it annoys you so much I would prefer that you find other posts to spend your time on.
Google has already sent payments out for Adsense to publishers. There should be no reason to worry about HP making payment on the scheduled date (2/28) if historically it's always been transferred on that date.