If there's one thing customers complained about, though, it was the lack of expandable memory -- a problem if you used all the space on the drive, or if you already had stuff stored on an SD card.

ENGADGET

Studies at the Gale Crater landing site have been on hold since the beginning of March after engineers discovered a problem with Curiosity's computer memory, possibly caused by space radiation.

NPR: Mars Rover Curiosity Stands Down After New Problem