I just downloaded Steve Jobs' new biography this morning. As matter of fact I per-ordered the book late last week. I started reading the book and quickly found out that the bookmark function on iBooks has malfunctioned. Does anyone have this problem. And yes, I have iOS 5. I've also shut down my iPad and rebooted it, deleted the iBooks app and reinstalled it, and cleared all the programs running in the background. All to no avail. Any thoughts.