CMSForce2 web form problem using Explore 9

I tried to set up web-to-lead form on public web site using CMSForce2, but there was a problem when I browsed sites using Explore9. I put web-to-lead form inside sidebar component section and the form was breaking up in two-three section. By the way, it works fine under Firefox and Explore 8. Anyone has solved this issue? Thanks in advance.