After upgrading to the latest version, I no longer can set an automatic refresh
For automatic refresh of web pages, do I need to go back to 3.6? I just loaded the latest version and it doesnt allow me to do this.
You may have been using the ReloadEvery add-on which adds this feature to Firefox. Its developer has not yet updated it for Firefox 6, but you can try enabling it anyway by installing the Add-on Compatibility Reporter.
For more detailed instructions, see Re-enable add-ons that were disabled when updating Firefox.