Ok just put a wireless router on my mac's modem, so my buddy can access from his pc in the other room. Now, when I double click ANY icon/file on the Mac, it does not open it, but the side pop up menu does appear, then when I click "open" from there, the file or icon's file will open normally. I just want the file to open on double click like b4. I tried mouse click speed in all directions... did nothing. All dock icons are doing this...and once i get to the internet the same thing happens within the browser when I double click on anything, so it's not just a dock thing. ??????
Go to your System Preferences > Accessibility > Change take your double click speed OFF OF THE FASTEST.