= Richard Stallman + Linus Torvalds = GNU/Linux [OSS]GNU - GNOME + Linux Kernal = Opensource Operating System
I.Gnome classic ALT-TAB issue fix..
Command : ccsm >> Compizconfig Settings Manager
sudo apt-get install compizconfig-settings-manager
-> CompizConfig Setting Manager
-> opened the manager and navigated to window management
-> checked application switcher (previously disabled )
-> Worked like a charm