here's the blog I'm developing (on a temporary adress): http://template.peixefresco.net/
And when I click on a tag that have just 1 post tagged, the sidebar overlaps the content: http://template.peixefresco.net/tag/cores/
When I click on a tag that have two or more posts, it's correct: http://template.peixefresco.net/tag/desabafo/
This error just happens in Firefox, in IE7 it's alright.
(I don't have tag.php and the archive page is the same as index)
Any idea what it is? :|