On 15 May 09, at 04:54, Shraddha Karwan wrote:
I am writing an iPhone application. When I traverse from the main screen to
a second screen, an AlertView is displayed.
If the user clicks on the Cancel button of this alert view I am traversing
back to the main screen.
I used this

[self.navigationController popToViewController:
[self.navigationController.viewControllers objectAtIndex:0] animated:YES];

But I get an error "Unknown Host: Operation timed out" on the debugger and
the application crashes. I searched on the internet and
got to know that this error is related to SNMP.

No, you're on the wrong track. SNMP is not involved at all here - the fact that a similar error message appears on the net-snmp-users mailing list is a coincidence.
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