it worked before with the same cards. all of a sudden, well i say that but i don't use a lot of sd cards. ive noticed my 27" iMac doesn't even notice when some sd cards are in the slot, particularly micro sd cards in an adaptor. i have 4 cards and 3 different adaptors and none of them even show a flicker of recognition. however my 8 gig proper sd card shows up straight away. weirdly a colleague gave me a 32 gig micro card to put some films on and i thought it wouldn't work but it appeared straight away. this was using one of my adaptors. but a selection of 32meg (its as free!) 2 gig, 4 gig, 8 gig ones done. the cards all work in my phone. in two minds, its no so important but its annoying. i bought the machine ex display model only mid last year so its still under guarantee but i live on a wee island so it'll be a month away to get fixed. i took back the mouse to get fixed and it was a month to the day before they gave me a brand new one. thats the thing though, might they just give me a newer model rather than fix it.