yes - different sections of Islam have different ideas on birthdays.

TCOM - apparently is is haram in Sunni-speak to celebrate even the Prophet Mohammed's birthday ..

"2 – Celebrating the birthday of the Prophet (peace and blessings of Allâh be upon him) is an imitation of the Christians, because they celebrate the birth of the Messiah (peace be upon him). Imitating them is extremely harâm. The hadîth tells us that it is forbidden to imitate the kuffâr, and we are commanded to differ from them. The Prophet (peace and blessings of Allâh be upon him) said: "Whoever imitates a people is one of them." (narrated by Ahmad, 2/50; Abû Dâwûd, 4/314). And he said, "Be different from the mushrikîn." (narrated by Muslim, 1/222, no. 259) – especially with regard to things that are the symbols or rituals of their religion".

http://www.sunnahonline.com/ilm/aqeedah/0067.htm

Which is more or less what the Cleric in the above article is saying.

Now THAT is something I didn't know.

This is what is so great about QL - I learn something new almost every day.