This is occuring for me too. Every URL Icedove opens is actually being opened in Iceweasel. This includes the background checks for extension updates it appears.
Hamish -- Hamish Moffatt VK3SB <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]