Download the latest version here
Is there any information about it in the antivirus? Virus name or anything?
Ok, this is not an antivirus warning, just browser info. I fixed that.
Scroll down in the antivirus and try to update it. What version does the antivirus shows?
With Quick-Reply you can write a post when viewing a topic without loading a new page. You can still use bulletin board code and smileys as you would in a normal post.