I have a connection problem with any app on Android 2.3.5. I can access the internet with the stock browser but any other app with full network permissions isn't able to connect to the internet. My handset is a Simvalley SPX-5.
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You can try one of these steps to solve it.
PS: Are you sure you are correctly connected to the web? Maybe if you are using a cellular network, it can be very slow.. Also check this link.