Sometimes, not always, for no apparant reason when i click on something once it is a double click, but other times it's fine. This problem just recently started, and I have not changed anything, whether un/install or anything else, to cause this that i can name. I have double click to open an item selected, yet sometimes it just takes one when i don't mean to, and can be very troublesome. Even when running only what is essential and nothing else, this happens. Also, occasionally, when i try to highlight and copy text it refuses to or jumps around, or when moving a file, it will jump to a new location i didn't choose, not respond, or just stop working half way through moving the file.