Strange user creation behavior detected
I have been experiencing a very strange user creation phenomenon on our wikirating.org website and I hope someone can help me to understand or solve this problem: Yesterday Feb. 1st, 2012, a visitor created an account (Deguest) on wikirating: (User creation log); 00:47 . . Deguest (Talk | contribs | block) New user account
Few minutes later, a new user Fernandosjp has been created by the very same account Deguest: (User creation log); 01:30 . . Deguest (Talk | contribs | block) created new account User:Fernandosjp (interested in the idea!)
I contacted the user Deguest and asked him why he created a second user, and he told me that he never did that. OK, he could be a liar but I am pretty sure that he told me the truth. Especially because the user Fernandosjp entered his real name (a spanish name) and the user Deguest is a french guy. I know this does not mean anything at this stage. Then I could find the user Deguest on the internet from his real name. There is no way that this guy would try to cheat. He has a very high and respected profile.
Would anyone have an explanation for that? Thank you very much in advance Erwan Wikirating