First I want to thank you guys. I've never posted here, but I've lurked a lot. Any issue that I've previously had I've found an answer to just by searching this place so you have been an invaluable resource to me. Now I've got an issue that I haven't been able to find an answer to. I’m running a 27 inch, late 2013 iMac. Since installing El Capitan I’ve been having a keyboard problem. If the computer sits for awhile when I wake it the keyboard (standard iMac wireless) has an extreme lag. In addition, when the lag is taking place what I suppose are diacritic options appear above each letter typed. I assume the lag has to do with some sort of memory leak; however, when I check the activity monitor nothing looks very different when comparing “no lag” sessions to “lag” sessions. Please keep in mind that I’m ignorant so what look does NOT look different to me may look different to someone else. Any suggestions? Thanks.