Comment 19 for bug 957843

You should definitely use LUKS instead of ecryptfs, Alan. There is no indication that this bug got fixed or even looked into since it has been reported. If by "cause" you mean what triggers this bug: when the FS containing the ecryptfs files runs out of space, files in the ecryptfs volume get corrupted. If you don't use any unencrypted area on your home you might be safe but then there is no reason whatsoever to use ecryptfs in the first place.