GNOME 3 is not stable enough on some video card

view story

http://unix.stackexchange.com – I have a laptop dell inspiron 1720 and nvidia GT 8600m graphics card. I have install the fedora 16 its work fine for few days but now Gnome 3 crashed and I am unable to login. Does Gnome 3 is not stable in my video card? or I have to install some driver to fixed it? Now a days I am using fedora removing gnome 3 shell and login to the fallback mode like GNOME2. (HowTos)