Today (while in class working on important notes for a test!) my edge froze totally. Both LCD and E-ink were totally non-responsive and I ended up rebooting. The edge shut down with the journal I was working on still imaged on the e-ink (as if I had removed the battery) I restarted and the page changed to the last PDF I had been viewing. I reopened the journal, the page of notes I had been on was lost (although the journal itself was still there). I started to rewrite the missing notes and the edge spontaneously rebooted. Can you advise, this is a crucial time in classes as we are about to take the first set of tests in a 12 week summer semester. I need reliable performance. Help please.