If you guys didn't watch the fight but want to know what happened, all I could say is don't read comments that are coming from people who are incapable of thinking objectively (Pacquiao fans, Ortiz fans).
Mayweather, as much as I hate the guy, didn't really do anything wrong technically or ethically. And it's getting ridiculous how many people are defending Ortiz as if he didn't do anything wrong. Ortiz is the one who committed the ultimate dirty foul (numerous times) but everyone is pointing their finger at Mayweather just because they have a bias against him. It's ridiculous.
Ortiz is an idiot and has questionable mental stability. Mayweather accepted Ortiz's apology the first time, including getting kissed by him. The round was back in session, and Ortiz STILL wants to just hug and kiss Mayweather. Enough is enough. If Ortiz thinks he can just call his own timeout in a fight to hug and kiss people in order to alleviate his guilty conscience, that is his own fault, not Mayweather's. Mayweather was not obligated to have to abide to Ortiz's made timeout. And considering how blatantly dirty Ortiz's headbutt was, he absolutely got what he deserved when his @ss got knocked out by Floyd.
If you read or watch interviews by Dan Rafael and/or Kevin Iole, some of boxing's best analysts, even they've said that Mayweather did nothing wrong and Ortiz is the one who messed up.