From what I could gather, a couple of people I have called, that there are large amounts of people at the Parliament Building, but not any riots. Some stones were thrown but police is on the defensive and not really any clashes what could be considered serious.
Another friend in another part called Mohandaseen said things are quite peaceful, people singing the national anthem. The only thing amazing, that the crowd is quite large. Traffic is moving slower than usual in some parts of Cairo.

We'll see how it develops further - but I think most people will start leaving soon as it's getting dark and more cold now.

So far no Tunisian type revolt.

UPDATE: My friend who was on his way downtown said traffic is being diverted, so nobody can drive downtown due to the large crowds and police presence. He didn't get a look at anything tho.