Sometimes, NOT all the time, my MacBook misses the first two letters when typing into a window that hasn't been typed into in awhile. This has become very annoying, but I don't know if it's the same problem that other people have been describing in other threads. It's done this to me time and time again, and it only seems to be the first 2 letters I type, no matter what letters they are. It's driving me crazy! Has anyone else had this problem?