Feedback on the Lenovo Thinkpad T520i - keyboard works not properly

Hello, here's the issue with my keyboard. When I press (not hold) Super I always see the shortcut list. So to enter Dash I need to press Super twice. The same thing with Alt to enter HUD. Also I can't copy/paste in terminal using Ctrl+Shift+C/V. It simply doesn't work as a shortcut, however it is set by default in terminal setting. I installed the VM using Oracle VirtualBox and everything works perfect there. I have pre-installed Win7 on my ThinkPad, but I installed Ubuntu by side on separate partition. Currently I have Ubuntu 12.04. When I had Ubuntu 11.10, I didn't have such problem. Thank you