yahoo信箱無法註冊

我的yahoo信箱無法註冊
點註冊就出現以下文字:
Sorry, Unable to process request at this time -- error 999.

Yahoo!
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.

Return to Yahoo!

因為我要辦FB所以有辦很多個信箱
就是辦太多個所以才會出現以上情形
我想問說
怎樣才可以恢復到一般正常註冊畫面
拜託知道的人告訴我~~~