Ok, I updated to the newest ftb launcher and now my mouse cursor shows up like I have pressed the alt button (But i dont) and causes my mouse not to respond. It only does it on multi player and only for a minute then it works fine then dose it again. I have tried updating my drivers for my mouse and everything else. But it only does it on multi player and since the update. Its not that bad, Its just a major pain. I dont happen in regular minecraft or anything else just ftb. So if any one has the same problem or a fix please comment, Thank you for the help Gen.