@Those who are lucky I hope it lasts.
I am not to upset by the odd malfunction as long as it isn't hard to fix.
My new bizarre story:
Was reading on balcony. Turned off reader and set it on desk in other room. Glanced it casually and it was flashing blank screen and reloading arrows.
Then it went to opening book with no reset necessary.
Everything ok except current book back at start minus bookmark.
Definitely turned it off, cover of book was on screen with message saying reader in sleep mode. Definitely was at least 3 minutes later as I went to bathroom after putting on desk. Did not touch reader, it just went from sleep mode to opening book.
Perhaps a poltergeist
Helen