This is an old news story from November 2006, but I just stumbled upon it today when googling for something else:
albawaba.com middle east news information::Dina dancing in the streets
Dina was apparently arrested for dancing around publicly out of happiness at the premiere of a movie she was in.
This story doesn't come out and say it, but another article (or maybe it was a blog) I stumbled upon in my googling said that she was blamed for providing the stimulus for that mass sexual harassment incident that occurred in Egypt around that time. (Ie, the stampede of young men at the eid who grabbed/groped young women in hijjab.)