Thank you for your fast reply.
it always happens with the same files...
up to now there are 2 PDF's which cause the PRS 650 to sudden restart.
I just measured the time and almost exactly after 1 minute after opening those files/books, the eReader blanks the screen and automatically restarts itself.
After restarting the"new"-flag for the booked opened and caused the restart ist set to "new" again, as it never was opened and read.
Furtheron I made another test and had another strange issue:
When opening one of those files but then pushing the "home" button within the 1 minute before it crashes and restarts itself, I end up in the main menu , BUT then when leving the reader without doing anymore, it crashes again within 1 minute and restarts itself... so I just need to start one of those books and close them or stay within them the issue happens... but now a new observation: when opening one of those books, closing them and opening a "good" book, it does not crash and not restart...
First I thought maybe the filesize may cause the problem, but some other PDF files are even larger and don't cause this issue.
Last edited by aceton; 05-28-2011 at 08:16 PM.