Discrepancy in reputation viewed in Summary and Reputation tabs

Question

When I view the Summary tab in my profile, it is showing +55 reputation points for this answer: https://superuser.com/a/590146

When I view the same answer in the Reputation tab in my profile, or if I view the actual answer, it is showing +75 reputation points for this answer.

I have refreshed my browser for the pages many times with no change. Is this just a case of the summary information not being updated as often as the other pages?

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Here are some screenshots:

Summary Tab of profile page:

Reputation Tab of profile page:

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Here is a partial of output from https://superuser.com/reputation:

...
...

 2    589054 (10)
 1    589054 (15)
-- 2013-04-29 rep +25   = 1071 
 2    590146 (10)
 2    590146 (10)
 2    590154 (10)
 2    590146 (10)
 2    590146 (10)
 1    590146 (15)
 2    590146 (10)
 2    590146 (10)
 16   590114 (2)
 2    590175 (10)
-- 2013-05-01 rep +97   = 1168  

** rep today: 97
** rep this week (2013-04-28 - 2013-05-04): 122
** rep this month (2013-05-01 - 2013-05-31): 97

...
...

Let me know if I should post the full output.

Answer 1

The summary tab does not show all of today's reputation changes. It's the most recent changes, which sometimes are less, sometimes more than one day's. Both views (summary and reputation) do collapse reputation changes to the same posts (and in the latter case, changes of the same kind) into one list entry, and the summary seems to be limited to four entries.

As you can see from /reputation and the expanded reputation changes per post, you first received two up votes for 590146 (14:48, 14:55), then one up vote for 590154 (15:02), and then another four up votes (15:06, :08, :12, :16) and one accept (15:12) for 590146. The summary page simply used the up vote for 590154 as the cut-off point so that the 20 reputation you got earlier didn't make it into the summary.