Perhaps all the micro card needs is a format, apparently the DSTT has a weak spot handling fragmented data, if you haven't formatted the drive in two months it can get a bit clogged.
I still recommend that if you have the problem again you should format and just used a bit more than half the capacity of the micro card for a little while to see if you find any more problems, if anything, a little maintenance clean up of the micro can't hurt either
I still recommend that if you have the problem again you should format and just used a bit more than half the capacity of the micro card for a little while to see if you find any more problems, if anything, a little maintenance clean up of the micro can't hurt either