Can you tell me why the typing on my computer won't space and is so slow?

I had some probs with a corrupt file…and got help here from that. (Thanks, PD). Everything seemed fine..again. But I noticed that when typing on my Google Email….it was slooowww or I would type a letter (as in “a” or “e”) and it would not come onto the screen. I would have to backspace and do it again. I strike the key or spacebar….and it may or may not type or space….that sort of thing.

I asked Google forums…and they said it was Skype that might be a prob..so I uninstalled it. Well, now…..it is typing really slooooww or not inputting letters on everything….including fluther and google mail.

I added Carbonite to back up my files…but that was before uninstalling Skype….and I was fine typing on everything (but Google) with Carbonite.

Any ideas…..as this is maddening….not being able to type quickly or having to go back to type in missing letters.

Thanks!