I have a PRS 300 reader which is normally fine. This week it has slowed down very much when I turn pages in a book, the delay is about 2 - 3 seconds and sometimes more. The reader is fully charged and functions are accessed readily for most of the time. However now and then the reader will 'Freeze' for a few minutes and all the button pushing doesn't seem to work and all of a sudden, it is back to normal.
Any thoughts please?