The same for me :) No gdm upgrade but something else, but don't know which package exactly but yes, xorg-driver-fglrx is installed:
lgb@vega:~$ dpkg-query -W xorg-driver-fglrx xorg-driver-fglrx 1:7.1.0-8-3+2.6.24.12-16.34
So maybe it's not about gdm but package xorg-driver-fglrx ?
The same for me :) No gdm upgrade but something else, but don't know which package exactly but yes, xorg-driver-fglrx is installed:
lgb@vega:~$ dpkg-query -W xorg-driver-fglrx 8-3+2.6. 24.12-16. 34
xorg-driver-fglrx 1:7.1.0-
So maybe it's not about gdm but package xorg-driver-fglrx ?