Wrapping, glitches

I have a problem...nothing unusual about that is there :-S.

http://materialprojects.com/peloton/default.asp

Okay, so this site I'm developing. Half the time it looks great...half the time the "drilling and well data software solutions" area on the right, gets pushed below the "solutions" box on the left. I hit refresh, and it works again...hit refresh again. and it gets shoved down. It's like the CSS isn't getting applied correctly everytime. And this causes me to be angry...and you're not going to like what happens when I get angry...actually all that happens is I use a table for the content area.

Anyone else experience this weird glitchy width issue? I'm tired of seeing it quite honestly.

Make sure you validate it. Is this problem from IE or Firefox? Or both...works fine for me in FF