I have a similar problem with SD cards (reader hangs with a card in) but I emailed
contact@bookeen.com on Monday without a reply. I have now forwarded it to
support@bookeen.com and I will let you know if that has better luck.
In the meantime I have decided that I can keep all my books on my notebook and the 64k memory is more than enough for daily,weekly (or even monthly!) reading.
David