From the BBC:
Umaru Yar’Adua has been sworn in as Nigeria’s new president at a colourful ceremony in the capital, Abuja.
Standing on a podium in a parade ground dressed in a white gown, Mr Yar’Adua was cheered by his supporters after he signed the oath of office.
The inauguration marks the first time in Nigeria’s history that one civilian leader has taken over from another.
But his election was widely condemned as “not credible” and small protests were held in the largest city, Lagos.
“I, Umaru Musa Yar’Adua, do solemnly swear that I will be faithful and hold allegiance to the Federal Republic of Nigeria… That I will protect and defend the constitution,” said Mr Yar’Adua, taking the oath from Chief Justice Idris Kutigi.
Word is there were lots of protests surrounding the ceremonies today as well.