I have a very strange bug with 1.9 and L2TP connection. I do not understand how or why but 1.9 sometimes revert to "pre" L2TP DNS. You know L2TP first connects as DHCP (gets "local" IP , DNS etc) , then logins to server and get new set of IPs including DNS. So the problem is that at some moment even while everything was working fine for a hour or so - DNS reverts to DNS from "first" DHCP set. The programs that do not use DNS continue to work fine but browsers etc ..