I am having trouble with my website/blog. When you land on the homepage, the header is Ok but the side bar is weird. There is no style or formatting for any of the sidebar widgets and it's all in bullet points. (it's kind of hard to describe) When you click on any posts, the header image will disappear. The formating in the sidebar widgets comes back. What I want to know is how do I have a header image display on my post pages and how can I get the sidebar formatting to display on my hompage. I am currently using wordpress widgets for sidebar. My blog is at lifefreak.com I appreciate the help.
Just a guess... it seems as its the url rewriting. Did you try to assign all css-backgrounds an absolute url?
I looked at your blog. Did you mess with the theme files? you should never mess with those files unless you know what you are doing. If you didn't mess with them, then the theme is not compatible with WordPress 2.5 and you should try another theme. It is easy to test. In your WordPress Admin, click "Design" and then select the "default" theme. If everything is fine, then your theme is broken.
Try closing the img tag for your header image. The tag was left open for some reason. EDIT: that is probably not the culprit but might as well close it anyways.