I've noticed lately a very pronounced delay when typing on the keypad. There are times when I am literally 3 or 4 words along before they appear on screen. This occurs most often on Facebook, but also in Pages and Safari searches, comments, etc. I am on an iPad ver 1 with the latest iOS. System monitor tells me I have more than 50% of my memory unused. Internet connection doesn't seem to be an issue. Safari cache has been cleared. iPad has been rebooted. Any ideas?