Greeting's


I use firefox as my browser (ver : 1.0.6). recently I'm having problem authenticating my self on hotmail site. After I login and every time I try to open another mail (Either by clicking next) or even if I click on "mail" After going through a mail. I'm asked to login again. I also get a security warning from firefox which says "Web site certified by an Unknown Authority". This does not happen when I login for the first time.

I get this error everytime now-a-days. I also get the same error when I try to log in Using "enhanced Security".

I have scanned for virus both online and offline, I've also scanned my system in safe mode. I have also scanned my sytem for spyware with two anti-spyware software (in safe mode too). I have used a trojan scanner to find any trojan's but none are found. I have used ROOTKIT revealer but no rootkit's are found too.

I use WIndows XP with all hotpatches, sp's. My firewall and antivirus and other software's all are completely updated.

I even scanned Using Hijackthis but found nothing.

Any suggestion's ?

I have attached a screen capture.