Please note that (Etisalat) Internet in the UAE is heavily filtered with serious filtering equipment (they can afford it) - i was there in 2007/2008 and found it the most erratic internet access experience of all countries i've visited so far.
Read about
internet filtering and what to expect.
Du is quite a bit better, but the pressure was already on in 2008 to comply to state rules. Du came from the UAE Free Zone's where internet access seems to have different, less strict rules.
Cheers!