I'm having the same problem on this site:
www.alotropia.org/endesarrollo
Everything is OK in IE8 and firefox, but in IE6 the main content displays below everything else. I have no aditional css files only mycommunity.
I can see that qrQq97y3P2yS disabled the right column in the site. Didn't you find any solutions?
Any suggestions from Joomlapolis staff?