I had the Maintenance Mode plugin installed but I recently removed it as I noticed that when the mode was set to deactivated I could not access my feed e.g. http://www.example.com/?feed=rss2. I'm actually using Feedburner so the page is redirected to a Feedburner feed e.g. http://feeds2.feedburner.com/example and then I see the Maintenance Mode page. I've removed the plugin completely but this has not changed anything.
So close to completing the website, so any help would be much appreciated!