Comment 10 for bug 2022821

As J-Paul pointed out and I can confirm the problem is if you have an NTFS drive thats gets "dirty"/file system gets corrupted, due to computer crash, unsafe mounting etc, Deja Dup starts using all memory (32gb) and then ends up locking up the machine, requiring a hard reboot.

J-Paul's solution works and I can confirm everything is back to normal after using Windows to chkdsk /f.