Comments Issue

So I've been having this problem lately where I'll go to type a comment, but only some of my letters will be recognized and written down. So, for example, I tried to write the phrase "This is sick," and it came out as this: "Thiiick." No kidding. I can see this issue before I post it, so I can put my cursor back in the box, delete it, and write it again, then it'll type fine. This doesn't happen every time, either. Only occasionally. It's actually been happening for over a year, too. I first noticed it about a year ago on a different computer. I stopped playing for a while, then picked it up again, but now I have a different laptop. So it's not my laptop that's the problem. Any ideas Char , or anyone else? Thanks for the help.