Reputation received twice from the same member

Admins/Mods,
I received reputation points from one of the CG Buddy's today, but how come he was able to rate my post twice within an interval of just 1 Minute.
This is the post
http://www.dev-archive.com/forum/showpost.php?p=1190612&postcount=2

I thought you could not rate the same post twice and moreover, you cannot give away reputation points to the same person, unless you spread it.

Is this a problem with vBulletin?

Thanks
[477 byte] By [Shuja Ali] at [2007-11-19 11:01:46]
# 1 Re: Reputation received twice from the same member
In looking at the list of people that have given you reputation ratings, I don't see a double post. Who are you saying rated you twice?

Thanks,
Brad!
Brad Jones at 2007-11-10 3:36:29 >
# 2 Re: Reputation received twice from the same member
I was talking about this situation here
Shuja Ali at 2007-11-10 3:37:29 >
# 3 Re: Reputation received twice from the same member
:confused: Doesn't this one look like a problem..

Coz like the way i got positive rating, someone could rate members negative??
Shuja Ali at 2007-11-10 3:38:39 >
# 4 Re: Reputation received twice from the same member
Yes it does. I'm not sure how this happened, but am looking into it.

Brad!
Brad Jones at 2007-11-10 3:39:36 >
# 5 Re: Reputation received twice from the same member
Thanks
Shuja Ali at 2007-11-10 3:40:35 >