On the credit reported in http://www.boincstats.com/stats/boinc_user_graph.php?pr=bo&id=7ef4e0c7a51953b909c82cd5d23635f8,
I think I should have no more than 20,000 credits in a highly abnormal day, but something credited me with 131,715 credits on the 23rd. You can leave them there if you like, but that would probably be unfair to someone else somewhere.

THis is not critical from my perspective, because we are all just contributing here, but this may give you a clue for how to fix another complaint.

Thanks for all the support and hard work,
Doug

I see that I am reported as:

Joined: Oct 27, 2006
Posts: 1
BAM!-ID: 10757
Credit: 126,604
BS-RAC: 923
World-Rank: 41996

but this is not accurate, I have been contributing since 2002-06-23, my acount number is 20853, and I should have more like 1,632,606 credits, with about 4,663 RAC. My world rank should be around 1300.

I am not very chatty, this is my second post; the first is above.
Doug

This info is for when you have signed up for BAM! and not when you started contributing to BOINC
As for the credit and RAC they come from your combined BOINC stats. What's shown there is what is shown in the forum

It seems the jumps in your stats are cause by merging CPID's (the largest jump is more or less equal to your total RieselSieve credit). Other better credits can be attributed to SETI not export stats regularly.