Also my opera is up to date

Version information
Version: 24.0.1558.61 - Opera is up to date
Update stream: Stable
System: Windows XP 32-bit

Browser identification
Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36 OPR/24.0.1558.61

I am getting same kind of exception for, https://www.tumblr.com/login

"Invalid Server Certificate

You attempted to reach www.tumblr.com, but the server presented an invalid certificate."

Also for,

"Invalid Server Certificate

You attempted to reach auth.opera.com, but the server presented an invalid certificate."