Hi,
I created a base file (~50BG) in February and have since made 3 differential backups. The first two are small (~1MB) and were made in February. The third backup is larger than the base file (53GB) and was made in April. However, I have definitely not changed all of the 175GB that I'm backing up. I've probably only changed ~10GB at most. I noticed in the progress box that it was compressing files that I have definitely not altered, moved or accessed.
Is this behaviour expected? If not, (taking a complete stab in the dark) it wouldn't be a bug that has anything to do with daylight savings, would it?
Ta!
the daylight savings changed in your area since the base file was created?
Yup, I'm in Melbourne, Australia, so our clocks went back an hour on 5 April.
I'll see what I can do about this, but it is handled internally by 7-Zip and I don't remember seeing an option to change this.