Okay so I have a weird problem the "general perms" in usergroup if i click the red never box and try to scroll all the way to the bottom half of the options disappear and when i drag my mouse on the blank space it start coming up..
It might not be Chrome. See Tracy's reply above. It's possible all those tabs you have open are causing issues, so try it without all those tabs open. Close Chrome and restart it and then try again. That's quite a high number of tabs to have open at once.