Comment 48 for bug 332945

YES !!!
I followed the hint from the blog and it has helped! The orange icon is there... I had to downgrade one package manually with dpkg to give it try :-)

In the terminal run:
gconftool -s --type bool /apps/update-notifier/auto_launch false

and then either logout/login from X or restart update-notifier (killall update-notifier && update-notifier) and wait for next rolled-out update.