I'm having a lot of trouble with this SD card slot of mine. I have a 4GB SDHC card that I need to get photos off of. I always ejected my SD cards by dragging the icon to the trash and dismounting them before I pulled them out. This time was no exception. I plugged in the SD card. The card read for 1 second, then it was "improperly ejected", then mounted again then ejected and so forth until the SD card slot no longer was able to read the drive. This all took 3 seconds. I reset PRAM, rebooted, tried other SD cards, etc. with no luck. Help!