Hi Rick, since you seem to use your system for some years now without cleaning config files in /home: can you please execute the following commands to look for more iceweasel files (first command), or files referencing iceweasel (second command, this might take a while):
$ find .config/ .local/ -iname iceweasel
$ find .config/ .local/ -type f -exec grep -il iceweasel '{}' ';'
On my system the output is empty (except a tracker file).
Greets
jre
