Guru,
i had the same problem.I just forgot about it and later after some days when i checked, it showed Silver.So it will take some time i think.Maybe a bug.But it will change.
Maverick had written that the membership type is not being shown correctly owing to system error. But the Boarder status is being shown correctly. As you have become entitle to silver membership, this will be changed when system is corrected. so need not worry.
G. K. Ajmani Tax consultant http://gkajmani-mystraythoughts.blogspot.com/
