If you check the validity of www.gentoo.org http://validator.w3.org/check?uri=http://www.gentoo.org/ You will notice that you mixed up the meaning of align and valign. It must be valign="middle" and align="center" you made it just the wrong way. Please fix this to make the webpage valid html.
unfortunately it will take quite a bit more than that to make our pages valid. rest assured, however, this ia a pet peeve of mine as well... and am working on a way to fix it *** This bug has been marked as a duplicate of 11850 ***