Every time I try to log in and then go to different areas of my Moodle site I get this message. The website I am using is http://mgresa.mrooms.net. I do use this site at home on the laptop and at work. I didn't have this problem last semester but I am now having it at both locations. Sorry, but your IP number seems to have changed from when you first logged in. This security feature prevents crackers stealing your identity while logged in to this site. You may see this error if you use wireless networks or if you are roaming between different networks. Please ask the site administrator for more help. If you want to continue please press F5 key to refresh this page.