Now i am just finished the bit in shanghai were you need to get out of a room filled with guards and killed two giant robots and all the way through that i coudent use the aug i had bought at the start of the game witch had been working fine up till that part. So can any one help me figure out what is happening.

I am assuming you are discussing the Smart Vision augment. Best guess is that  either (a) you left it on too long and out of battery power or (b) the enemies are too far away for it to work.

You sure you got the key mapped correctly? Try remapping the Smart Vision activation.

I had the same issue, had to restart to get them to work. There were several times the mouse wouldn't select things as well, only the keyboard worked.

That happened to me on xbox.I've noticed some weird bugs with the game but nothing a restart wont not fix.