Iranian cyber attacks on Twitter?

After his controversial inauguration yesterday, both Ahmadinejad websites were taken down by internet activists.

This morning (Iranian time) before Twitter was down, alot of people started to notice that Iranian opposition Facebook pages were down. This included the Facebook page of Mousavi (the presidents candidate of the 2009 Iranian election) and his wife. http://bit.ly/6x8bQ

The question remains if this has anything to do with Twitter being down. Is it maybe a retaliation of the cyber attacks (from various groups including Anonymous) on Iranian goverment sites?

Well it is no secret that the Iranian goverment tries everything in their power to stop information for getting in or out of Iran and Twitter is obviously their biggest enemy.