Clunk noise on Passenger side front area

I have a 2003 Hummer H2 and I noticed this morning that when going over a bump or a dip  in the road you can hear a loud clunk noise from the passenger side front wheel area. Has anyone else had a problem like this?

There is a similar thread running at the same time. Maybe it will help you...
http://www.hummerforums.com/m_125088/tm.htm