In my Samsung Notebook 3, when installing ubuntu 12.10 using usb stick it got stuck at the ubuntu logo.
I am sure my iso fine , first i tried ubuntu-12.10-desktop-i386 it got stuck now i have tried ubuntu-12.10-desktop-amd64 it also failed.
Laptop configuration:
Model : NP305E5Z
CPU: AMD A4 1.96ghz
RAM: 4gb