Hi,

The problem is with the certificates that IE has installed, it looks that they're not updated... What is expired is the certificate above yours, that belongs to Verisign ( CPS Incorp. by Ref. LIABILITY LTD.(c)97 Verisign ), expired yesterday, so every certificate below, like yours, is not valid too...
I don't know if there're any update for this from MS, the PC where I tried this is not updated... try windowsupdate...

ps: this is not a unix question...