don't know if i read this here or on a photo site but it said to reformat ( or format the first time) so you clear everything off the card...it is supposed to be able to cut the time between pics cause the card doesn't load it pic one in spot one, it has to search for a spot to put the pic in as you take pics so if something is there is has to search for a spot that is empty...formatting wipes the slate clean so to speak, deleting can leave something there it has to search past...but make sure you don't want to keep any pics on the card cause formatting takes them all away. i format when i put the card in to use it, that way i know i've got everything saved on disk that i want. it takes about a second to format it
the above is for normal formatting not sure what the low level stuff would be and
hope i remember this right but if not sue me for the amount paid and what it's worth =0