Wrapping/Float Issues in Firefox and IE

Okay, for the life of me I can't figure this out. Don't know if my head is in the sand or not. I hope someone can help a brother out.

I'm working on this site for a company, and everything is going fine except this wrapping problem in the main content area. It resolves itself on refresh, but that's annoying and who wants to always hit refresh. It's intermitent so sometimes you'll just need to click around a bit. Seems to happen in both IE and Firefox (I'm a PC guy...no idea what's happening on the mac).

http://www.materialbuild.com/cambrian-dev/

I've about thrown my hands up on this and put a table in place. I hope it doesn't come to that! Oh lordy lordy save me from the table badness!

Oh, and ignore the blog...that's in progress...integrating wordpress and it's a mess in there!

Ignore this please. I had forgotten to clear my footer, and it was attaching itself to the side of the content. Hence why it was being 'forced' down.

Not that anyone replied, but figured I'd keep you informed. Thanks for those who looked.

Glad to see it sorted, the reason no one replied was to do with the fact it is Easter period and a lot of people spend it offline .