Hi, Having a bit of a confusing issue with Aldiko and eBooks. I've got an apad, although I can't lay my hands on the spec just now. Pretty sure it's a VIA CPU not the RockChip. It's got a resistive screen and is running 1.7.4. Anyway, two issues. The first is that when I wake it up from hibernate, it tells me the SD card has been removed unexpectedly and tells me off for not unmounting it properly. This is annoying, but I can just take it out and put it back in, or just reboot and it fixes it. But it's a bit annoying, so is this a known problem and is there a work around? Secondly, and this may or may not be related, I mainly use it for eBook readeing, and have been using Aldiko. I've been getting a lot of books off Feedbooks, which is fantastic. Unfortunately, sometimes I download a book, and even though it's definitely visible in the file browser, and I've maybe read a few pages, when I come back to it, after a reboot or even just after the screen has shut off (power save, NOT going to full hibernate), I get the "book not found, please check your SD card", and lo and behold, the file has disappeared from the card. The immediate reaction would be a hardware issue with the card or port, but it's more complicated than that. Some books sit quite happily and don't "self-destruct", but then most - even by the same author - seem to self-delete. The file is gone. The SD card is behaving normally and no other data seems to be missing - as you would expect if it were a hardware or OS problem. It's select Aldiko books. For instance, I had an HG Wells book there. I downloaded another, and the file appeared - as it should - in the HG Wells folder next to the first book I downloaded. I read a couple of chapters, turn it off, come back to it later, and the file's gone, along with with 2 other books I downloaded. But the original HG Wells books is still there I'm just baffled. Can anyone explain why some books are being deleted? They're still present in the Aldiko bookshelf (i.e. the db listing hasn't been edited, which suggests it's not Aldiko deleting them), just the files themselves deleted from the eBook folder on the SD card. Plenty of space on the card. It's really confusing. They're there - I check after each download and the files are there. Then later on they're gone EDIT: I gather there can be issues with SD cards corrupting. Wouild it be worth ripping the contents of the SD card to USB/my laptop, and reformatting the SD card in case it's just a bit of corruption, then restoring my files back to it. Would that likely solve this issue of new files randomly disappearing? Is it possible they're all being written to a corrupt sector or something?