Microsoft Does Not Have a Valid Security Certificate on Their Forums
Yesterday I was looking through several sites that have the description of Pocket PC software. One of my searches lead me to Microsoft forum site. Here is what I’ve got (Leaving the screenshot without any changes):
What to say if even Microsoft doesn’t have a valid certificate? 
Maybe Firefox has a bit paranoid mode, but… it’s the fac. Strange thing, that today everything seems to be working, I’ve had to go to their site exactly at the moment when the certificate was wrong. But I was really afraid about it and I didn’t go to their site.