wifi error on public wifi network - Galaxy Grand Duos i9082 Q&A, Help & Troubleshootin

Just got my Galaxy Grand Duos 3 weeks ago, I love it.
At home I am able to connect to my home's WiFi no issues till now.
At the beginning I am able to connect the wifi at work. However from last week I am unable to connect to our open "guest" wifi. It gives me an error "Authentication Error Occurred". I have try forget network. still unable to connect.
Everyone else in the office is able to connect no problem with their mobile devices.
Why is my phone not being able to connect to this open wifi network?

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WIFI does not work in open network

HI!
From I have upgraded to WM6 I can connect by WIFI to my close network at home, but not in open network that I used to do before (airport, Cafeterias, etc), I connect, I get IP address but the internet explorer does not work.
Any idea? Have I forgotten something?
Thanks
Rafael.
I have a similar wifi problem!
I can connect fine at home, but on an open network such as at my university, I can connect briefly, then it will seize to work after loading a page or so.
Then I cannot connect again.
Anyone know how to solve this problem with open networks?
btw, I am using Black 3.0.1
Thanks!

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