Iceweasel not displaying favicon.ico

["Patrick Wiseman" <pwiseman@gmail.com>]

Hello:

This may be a bit OT, although it is changed Iceweasel behavior.  It used to be that Iceweasel would show my websites' icon in tabs and elsewhere, but it has stopped doing so.  My favicon.ico file is in my document root directory, but nowhere referenced in any of my HTML files.  The icon for other sites is still working as it should.  Does Iceweasel not grab 
favicon.ico from a website's root directory any more?  And, if not, can I force it to do so again?

Thanks
Patrick