Regarding your comment #3, were you switching back and forth from mobile to WiFi when you saw problems?
The one relevant bit of information in comment #4 is that bug #1270189 may be involved when switching from the mobile connection to a WiFi connection. Did you verify that you actually had a working WiFi connection ( ie. via the browser, ping, ... )?
@Cerebus
Regarding your comment #3, were you switching back and forth from mobile to WiFi when you saw problems?
The one relevant bit of information in comment #4 is that bug #1270189 may be involved when switching from the mobile connection to a WiFi connection. Did you verify that you actually had a working WiFi connection ( ie. via the browser, ping, ... )?