I installed Ubuntu 13.10 on VirtualBox, ran
apt-get update, then
apt-get upgrade and faced the following message
246 upgraded, 0 newly installed, 0 to remove and 3 not upgraded. Need to get 194 MB/203 MB of archives. After this operation, 6,602 kB of additional disk space will be used.
The message basically says: 1. 194-204 MB of packages (Why isn't it sure ?) 2. Only ~6 MB of space will be used to install ~200 MB worth of packages
How is this possible ?