Odd problem I've run across

Ok, well I'm a gamer that likes playing Counter Strike, but also on occasion some of those free MMORPG games. Now, recently I've been playing a game called R.O.S.E Online and my Counterstrike on my Windows side of my macbook. They both work fine, no problems. I then tried some game called Maplestory and Cabal Online, and that's where the problems started coming in. I do recall that this Maplestory game worked for me in the past, but now.. well its like this; I'll start either MS or Cabal, and what will happen is, my Keyboard and Mouse (both USB and trackpad), will pretty much just straight out lock up. I can't do a thing. I tried looking into the drivers, but there really aren't problems there I believe. Kinda frustrating..