Google opening on first starting firefox

Hi, I have changed homepage in the settings section, but, on first starting up firefox i get the Google homepage as my initial screen. I really dont want this, so i have checked everything, changed homepage url, removed google search option, and even checked the shortcut and .exe properties, and none of them point to google, yet it still persists. Is there any way to stop this happening please. Further to this, if i open a new tab i get the firefox page, and when i click home it opens my saved homepage url. Chris