Hi, I have some strange issues with my keyboard latly. First, two diagonal rows of keys completly stopped working. (8,i,k,(,)) and (9,o,l,.). However they suddenly started working again. Now, the issue is that at random moments its like the @ button is held in. (even though I havent pressed it). This can even happen when Im not typing so I just hear the click sound the mac makes when you type something without writing. So often when I type it looks like this: "Hi, m@@@@@y name i@@@@" it stoppes whenever I hit ano@ther@ @@@key@@@@.@@@@ (@this happened now) Im thinking this is a hardware issue. I have restored the whole machine, but it dod not help. I was wondering if it is anyone have had the same issue? Also is there a way of disabling a single key on the keyboard? Thank you!