Have you ever come across this warning when accessing internet even from your own house and to your own mail account? I experience this several times. It annoys me how I just access the same connection some hours ago and now I cannot. I tried to change the setting in the Firefox to allow this site, but there was no change. Finally I found something strange in my taskbar:
It was somehow set back to year 2006. So I fixed it, and worked back with my internet connection again, but.. whola! It is also fixed!