I have had this happen to me a couple times where I press on the screen of my Ipad 2 to enter a message and the keyboard pops up. I type the message and hit enter and the message is displayed, but the keyboard doesn't go back down. It covers all the skills and the virtual mouse, so I get stuck and can't attack. This has happened to me maybe 5 or 6 times since the Shipyards came out.

Note: Once this happens, I can press in the message area and type another message, but the keyboard stays up. To get rid of it, I have to clear SL from memory, meaning log out, double press home button, then hold down the SL icon at the bottom of the screen, not the main SL icon, and press the x at the top left of the icon.