I've never had any problems with this SD disk or card reader before but that was on my old Mini. This is the first time I've tried to use it with my new Mini 2.53.
I also tried this setup on 4 of the 5 USB ports on my Mini with no change in results. Also tried writing to my flash disk in each of those ports and it only took a couple minutes to copy the 40MB of files to the flash disk.
I've ordered a new card reader and will see if that helps.
