Indeed. I ordered two yesterday and have scrounged others in the mean time.
I cloned the boot drive so that I now have a backup of it. When I was attempting to clone it to a laptop drive that was not yet in service I got an error message in SD which related to a file called "lost+found". Doing a little searching I came across an interesting
posting which sounded like what I had been experiencing. It convinced me that I needed to do an archive and install and clean out all of the remnants of the past that I could. I have completed that now and will be making new set of backups.
This has been an enlightening, though not entirely amusing, experience. I am certainly glad that I had a program of rotating two backups.
It seems like I am the one who always gets the "stump the band" types of issues.
Cheers!