I am using Xubuntu. What do the updates do? I do not notice any difference after an update. The descriptions do not really them me and they benefit me. A way to find out what each update does is as good as an answer, since I assume that the updates do not all do the same thing.
--Update-- Also, what is the best way to figure what each update does (like a meaningful summary of each individually.) Just edit the already accepted answer.