IMPORTANT: PHP 5.3 is required as of 1.0.69, if you are still using PHP 5.2 we highly suggest you upgrade as it's end of life.
NOTE: If you are upgrading from a release older then 1.0.65 and using a custom theme you may need to update the css.
NOTE: If you get a page with just the background or the page does not display properly then clear your cache(templates_c and browser).