So we all know that when a system (OS) gets out of control, the solution with less thought involved is to reinstall the system. However, this might not be favorable when the user has installed lots of software, changed some configurations, etc., for all this changes would be lost (unless the user keeps a separate partition for the /usr/local/ directory; in my case I wasn't wise enough to do this back when I was partitioning my HD).
Now, I want to know if there is a way I can find all the differences between my current install and a clean Ubuntu 13.04. What is the simplest way to do this?
I ask this because I have found my system affected by a lot of uncommon bugs, which I think wouldn't be present in a clean install. I have reported them but since they're not in the developers' first interest, they have been somewhat forgotten.