I guess Lehman, which I believe acts as the MM for all of CyberTrader's NYSE trades, had a reason for not honoring my trade. STP, the stock I was trying to cover, gapped up and ended the day up 2+%. Next time I'll make a stink about it. Yes, I was in contact with CyberTrader, waiting for the fill that never came.
I chose not to escalate the matter 'cuz according to my swing trading system, it closed one stinkin' penny below my stop. The fact that my two other NYSE market orders got belated fills last nite shoulda tipped me off that LEHM really didn't want to cover my short.
One other time this happened I pushed hard enuf that LEHM closed my position the next morning in the premarket, using the previous day's close.
Oh well, I caught a lucky break today, so I'm not too upset. My system got me into STTX right before it halted. Probably my biggest windfall profit ever!