Rev. Voodoo on "Sidebar Problem"

You’ve gotta have some sort of mismatch on where divs are opened and closed,

Your sidebar is inside

#container
#content
.entrycontent

which makes me think .entrycontent is mismatched, as you have a second iteration of .entrycontent inside of the first

do you use either firebug for firefox, or developer toolbar for IE? They can help you investigate your Divs