Today I was popping my SD card in and out for various reasons, and at least twice I forgot to close Freda first, and later found that Freda had created a folder on the device called SD Card. (My library and temp files are assigned to the SD Card.) Then, when I put the actual SD Card back in, it got called SD Card2. (Same thing as happened to me a week or two ago, except this time I escaped without file-system corruption and was able to delete the bogus folder.)
I think it would be really great if error-trapping could be improved to where Freda would notice that the SD Card was missing and produce a message such as: "SD Card not found. Are you sure you wish me to wreak havoc on your file system? Y/N." Or, you know, just the first part.