I can't believe yum still has a problem with CTRL-C. When aborting an operation in F13 it still prints a horrible-looking python-backtrace and then just hangs. It seems to switch to the next mirror rather than "interrupting" the operation as one would expect. Well, not everybody apparently. Oh well, maybe something futuristic like CTRL-C will be implemented in F23 or so :-)

One thing that is cool about yum is presto:

$ sudo yum upgrade
[...]
Transaction Summary
==========================================
Install       0 Package(s)
Upgrade  99 Package(s)

Total download size: 198 M
Downloading Packages:
Setting up and reading Presto delta metadata
Processing delta metadata
Download delta size: 11 M

There's debdelta for dpkg, but I haven't seen it properly integrated yet.