I have very much of on-going issues with my Atheros wireless. In windows 7 the signal strength is always good but in Ubuntu it is most disgusting and this would be my last post. If it is not solved ill be happy to switch back to Windows because I need to work instead of troubleshooting unstable wireless. What I have heard that its better to upgrade the wireless based on the kernel version you have and so I have Kernel 3.12.0-031200-generic and wondering if someone can help me installing the latest .tar.bz2 file from the link below.

Link :-
https://www.kernel.org/pub/linux/ker.../stable/v3.12/