Instruct: Classify the given review as either positive or negative.
Query: Erratic and disappointing

I have used this for about 8 months on my Windows Media PC in my home theater. It constantly drops the first letter when I start typing, as well as erratically missing other letters while typing, the mouse is difficult to use. I am only 7 feet from the IR sensor in clear line of sight. I've tried different batteries, shading the room, but this keyboard continues to frustrate. Maybe I got a bad one but I suspect the ancient IR interface is the problem.I decided having a Green Button on the keyboard isn't necessary as I can map the button on another keyboard. So I just bought a 2.4ghz HP Elite wireless keyboard and Microsoft wireless 4000 mouse to replace it. The difference is astonishing...not sure why I struggled with this old keyboard for so long.