Hi Emilie,
Still got my fingers crossed for you, but I am suprised they leave you hanging for a week!!!!! Maybe check the online application system in case an email has slipped through un-noticed?
DimSum,
As others have said, definitly worth ringing HR and getting some feed back as to what part of your interview let you down. You sound like its not a big suprise, but it would be a shame to go through it all again and *maybe* tripping up again because you hadnt asked.