You don't realize how weird this is for some users like me. I use iceweasel from the command line 100 times a day, as that's my favorite way to enter URLs into a running iceweasel. So we see the worrisome message 100 times a day.
So not all users start iceweasel just once from ~/.xsession and never see the message. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]