Im having a problem with some of my sandisk ultra II CF cards. They have been extremely slow since i got them a few weeks ago. To the point where they process about 1 image every 6 seconds. My generic cards are faster then these. I format them on the camera and have even gone as far as formatting them on my computer. I shoot with a 20d and a 40d. I cant shoot in burst mode with these cards unless the camera is set for small Jpeg. There 2gig. Any help would be appreciated.
Jeff