fulco,
What firmware version are you running? Are you pulling a WAN IP located in the status page?
You might have to contact tech support. Since you're in Dubai the closest office I can find is in Iran. I would try giving them a call.
D-Link Iran
Unit 9, 5th floor , No. 16, 35th Alley
Alvand Street
Argentine SQ., Tehran, Iran
Telephone: +98-21-8888-0918
Fax: +98-21-8888-0919
Web: http://www.dlink-me.com
Email: info.ir@dlink-me.com