Skype uses a 3rd party payment processor to handle credit card
transactions. According to them you are accessing the Internet via a proxy
server and therefore they will not accept payment.
Skype cannot disable or change this security setting."
I contacted Comcast my ISP and was told they dont use proxy etc.
I have two PC with XP connected via router. I did not any problem with Skype transaction before.
So what may caused this problem to pop up without any reason?.