Since sometime last night, my Iliad aparently decided it won't go for SD cards. I have my books on an SD card, and it worked fine when I read in bed last night. Then I put the device on the side table and went to sleep. Today, I found the SD card, which was in the reader last night, on the floor. Somehow it'd popped out of the reader, and now when I try to insert an SD card (I tried several just in case), I get the 'clicking' noise and I can feel the spring just as usual, but the card just won't stay put. Somehow some little bit inside that holds the card in card in place must have broken... or?

How did it do that?
I've only had the device for abt. two weeks btw.
I wondered if anyone have had this problem and if there's anything to do? I have a CF card, which I'm going to use as soon as I get a card reader for it, so it's not a huge issue. It's just really weird. I guess it's covered in the warranty, but I wouldn't like to waste money on returning it and also be without it for (I presume) weeks.