When I view my user profile, I can easily get a list of all the most recent activity associated with my account. However, if I see a change to my reputation, it's much harder for me to determine what caused the change.
I've found the Reputation tab, but that doesn't seem ideal (and, in fact, seems a little awkward for tracking very recent changes).
What would be great is if the Activity tab included a reputation section similar to the other activity sections. So it would show I got 10 rep points for this comment, etc. starting with the most recent.
As it is, I find I'm having trouble tracking a number of changes to my reputation.