Hello, I admit this is probably not a pure ASIO question, but perhaps someone already encountered the following issue (boost 1.46, iOS4.3). When trying to resolve a host name just after 3G connection is established (eg., switch "airplane mode" off and on), I get the following error: "Host not found (authoritative)". The query looks like this: tcp::resolver::query query(tcp::v4(), "my.host.com", "9988"); On the other hand, if prior to the above query I open the browser or some other application that connect to the Internet, then the query works correctly. Moreover, it seems that if I try the above query several times, it succeedes after a while. Another interesting point: all the above occurs with 3G connection only, while with WiFi everything works well. What's could be the reason of such a weird behavior? Thanks.