My sidebar on my blog is below my content: http://wakeupsleepyhead.com/ It's like this with every theme I use. It was working not long ago and I have no clue how I screwed it up. What's the problem and how can I fix it?
At a glance, it looks like your left column is too wide and overlaps the right columns, thus forcing it to break. I'll have to take a deeper look tomorrow if I get the chance to find the exact problem.