Everything crashing after updating to gnome 3.8

[guru prasad]

Hi.. I am newbie to ubuntu and I am using Ubuntu 12.10 installed on my Acer machine.
Today i have updated to gnome 3.8. But after updating my system became unstable.
Most of the application are getting crashed.

Is any way to get gnome 3.6 back..

pls help..........

[dino99]

sudo apt-get ppa-purge ppa:gnome3-team/ppa

[guru prasad]

I already have done followed by dist-upgrade ,but it didn't resolve my problem..