Most of the time when I update my system, Update Manager downloads whole packages from the list. Even if the package only changes in a few lines. What I mean is, for a 4MB package that has only for example 2KB lines changed, Update Manager downloads the whole 4MB. With my connection this is horrible since it takes very long (Remember I download between 10KB to 50KB most of the time). Since there are several big packages, we could be talking between 2KB changes separated in 100MB of packages that I would have to download from scratch even though I had already downloaded them 24 hours ago for example.
So why does a Cache Manager need to download the complete package again when all that has changed is one small part. More importantly, is there a way that I can tell it to verify the source package to see what has changed and securely download only the modified part?
I will add that this is
synaptic also. All of them work the same way and when a 50 line of the package changes, I have to download the whole thing. Is there a more efficient way of updating, a configuration, a parameter?