ON my iPad 1, suddenly I cannot browse in the iBook store. I tap on an author's name, the screen flickers, then tells me to tap on an author's name. I recently did a reset to clear all the open apps because of crashing to home screen, and when it restarted, there was an update bar for a few secs beneath the Apple logo. OS 5.1.1, max memory, plenty of drive space. Any ideas?