清除cache 也沒用
但最後這招讓我可以登入 gmail
If clearing your browser's cache and cookies didn't fix the problem, visiting the secure site may resolve the issue.
Gmail offers an encrypted site for extra security. Because browsers are more likely to trust encrypted data, visiting Gmail through its encrypted login will often resolve issues.
Please try logging in to Gmail via https://mail.google.com.
我登入後立刻改為 "永遠使用https 連線"
上述的方法來自
http://mail.google.com/support/bin/answer.py?hl=en&answer=91343
坤龍