But, it seems that something is broken.
Today, a friend contacted me to help him getting a Flickr Pro by activating a Flickr gift. This is not the first time for me purchasing Flickr gifts. Everything worked. Just worked. But, not today.

So, I wanted to buy my 11th Flickr gift — yes, 11th!. I went into what Flickr called “Place your order” page. I hit that blue “OK, I’M READY TO PAY” button. After that I was redirected to another login form for another authentication process. Sure, part of the security checking processes, right? I gave my password and nothing happened. Okey, may be it’s my web browser — even I was sure that nothing was wrong with my browser. The other browsers gave me the same results. It didn’t work. Okey, I waited.
Then, I tried again. But, I got a another respond. It was a message like this:

Sorry, Unable to process request at this time — error 999.
Unfortunately we are unable to process your request at this time. This error is usually temporary. Please try again later.
If you continue to experience this error, it may be caused by one of the following:

• You may want to scan your system for spyware and viruses, as they may interfere with your ability to connect to Yahoo!. For detailed information on spyware and virus protection, please visit the Yahoo! Security Center.
• This problem may be due to unusual network activity coming from your Internet Service Provider. We recommend that you report this problem to them.

While this error is usually temporary, if it continues and the above solutions don’t resolve your problem, please let us know.

Okey. I’ll wait. Yes, it’s weekend, and it was midnight. Dear Yahoo! — or Flickr — could you please fix that? My friend just want to have his Flickr account upgraded. Thank you.
[Added later]: This issue had been solved. It seemed that there was something wrong with the payment gateway issue. My friend bought a Flickr Pro gift for himself. :)