I placed an order before noon on the 21st September for an item which was in stock from Pixmania and also opted for the 24-48hr DHL delivery option which cost £9.60; my product still hasn't arrived and the Pixmania order tracking says that the item hasn't been dispatched yet!
Did you fax/email them an image of your credit card? I was in the same boat a while back and was fuming about non-delivery and when I chased them I was told to send an image of my card. I declined and cancelled the order - I'd already paid by secure server. I hate Pixmania.
I'll contact them and see what they say. I haven't sent them an image of my credit card yet, the card details were verified online and I don't think they asked for them at the checkout. Hopefully I'll receive my item soon.