Facebook OAuth to login using Facebook SDK 2.0

I am developing an iPhone application that deals with Facebook. I am using the latest facebook-facebook-ios-sdk-cf1c2c3 SDK (SDK 2.0) to allow a user to login to a Facebook account using OAuth.

The user can log into the iPod Touch (4.3.1) without any problems. But on iPhone 3GS, I get the following error:

Error Domain=NSURLErrorDomain Code=-1202 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be \u201cm.facebook.com\u201d which could put your confidential information at risk." UserInfo=0x1b8350 {NSErrorFailingURLStringKey=https://m.facebook.com/dialog/oauth?type=user_agent&display=touch&redirect_uri=fbconnect://success&sdk=2&scope=read_stream,publish_stream&client_id=<APP_ID>, NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, NSErrorFailingURLKey=https://m.facebook.com/dialog/oauth?type=user_agent&display=touch&redirect_uri=fbconnect://success&sdk=2&scope=read_stream,publish_stream&client_id=<APP_ID>, NSLocalizedDescription=The certificate for this server is invalid. You might be connecting to a server that is pretending to be \u201cm.facebook.com\u201d which could put your confidential information at risk., NSUnderlyingError=0x1b83a0 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be \u201cm.facebook.com\u201d which could put your confidential information at risk.", NSURLErrorFailingURLPeerTrustErrorKey=<SecTrustRef: 0x1be310>}


I extracted the URL from the FBLoginDailog and tried loading it in iPhone -> Safari. It redirects to the following URL and allows the user to login:

http://m.facebook.com/login.php?app_id=<APP_ID>&sdk=2&cancel=fbconnect://success?error_reason=user_denied&error=access_denied&error_description=The+user+denied+your+request.&fbconnect=1&next=https://www.facebook.com/connect/uiserver.php?method=permissions.request&app_id=<APP_ID>&display=touch&redirect_uri=fbconnect;//success&sdk=2&type=user_agent&fbconnect=1&perms=read_stream,publish_stream&from_login=1&rcount=1

Additionally, I have the following workaround from the link: https://github.com/facebook/facebook-ios-sdk/issues/139

But the link also mentions not using it for the App Store executable. But I also get a problem for the application executable.

How to solve this?

Thanks and Regards, Deepa