Have you validated your site for coding errors — many browser inconsistencies are caused by errors.
If, after fixing any errors, you still have problems, posting a link to the site will be necessary for someone to help you.
Hi Zargs, could you give me some more detail about the errors you’re getting ? or how it is being displayed, which options of the theme options page have you checked, if you have a custom image for the header, etc. You can also try going to the theme options page, changing any option and saving the options in order to override the old ones, if you have updated the theme.