This bug just made me angry. I've literally spent the past two days trying to figure out why a clients computer would not login with gdm-2.32 and won't logout and has many non-responding applications. Grrrrrrr........ At least the next time I use my own computers that have nvidia cards I'll know how to avoid this issue.
Now I know what I need to do to get the all of the Zombie processes out of my own computer that I've remote logged into.