I am running Windows XP. I use copy and paste all the time. It seems like I end up locking up. First my right click on my mouse won't copy and paste, then I can't even get it to do it from the tool bar. I read that it could be my Ram not dumping, how do you control that? I end up closing all my windows and restarting my computer. Realllly annoying and time consoming. I didn't have this problem with my old 98se.