Have a look at this user's reputation tab of last few days. You can see that the user is upvoted serially for last few days. May be only two upvote doesn't considered as serial voting. There are some cases where he is voted more than two times. E.g. Oct. 9, Oct. 16, Oct. 17, Oct. 18. But not all votes are reversed properly. Only votes of date Oct. 18 are reversed. So I think the voting fraud script doesn't work properly.
PS: I don't have any problem with that user (even he is a good SE user IMHO.), but I am concerned for voting fraud script.