Oh, I know, sore subject with a lot of meta-folks. But I don't understand the mathematics involved with the reputation summary page, and I'm not an accountant (because it seems you need to be sometimes).
I answered three questions today (at this moment), here is the summary:
The problem is it isn't accurate. The "check checkboxes status and write..." question has 4 upvotes. It was "briefly" chosen as the accepted answer before the OP changed answers (the OP wanted to accept all three answers).
That was six hours ago.
The total for the day should be 105, 30 for the "TextureBrush", 35 for "App Settings", and 40 for "CheckBoxes". The "Checkboxes" question was unaccepted six hours ago, but is still showing that as accepted points.
I'm fairly certain my overall reputation is accurate, but the summary is inaccurate for the day and the details that go with it are a bit jumbled.
Here is a snapshot of my rep-calc page: