owa vista

I use web forms for the OWA and I am able to connect to the OWA, login and read e-mail. The problem begins with replying to or composing a new e-mail, the message body has a red x in the left upper corner and an error on page is displayed in the lower left corner, and you can not type in the message body, feels like there is a security issue that is blocking the messagebody but I dont know how to fix it. I added the site to trusted sites and allowed pop ups from the site, any other suggestions?