Hi I'm new to the forum. I installed iOS5 a few days ago, and was extremely surprised to find out that my dictionary works in almost every app on the iPad even on mail and safari, but it stopped working in the iBooks app. What happens is when I try to go and define a word, a blank bubble pops up as opposed to one with text in it defining the word. I tried this on several books and did everything short of restoring the iPad. Anyone else experience something similar or know a fix? Much appreciated!