My Aspire ES1-512 keyboard seems to be acting up. I have noticed, especially with the 'i' and 't' letter key, that when I am quickly typing, they will often show a double keystroke ... ' ii' or 'tt' when I didn't type it. Sometimes certain keys will not show up being typed like 'c' or 'e' . I had another model Acer where a whole section of the keyboard keys went dead and hope this one isn't going out as well? I do use my notebook every day for hours at a time for the past year. Any idea what is happpening or how to fix this? Thank You.