First post on Bitcoin Forum and I hope it's not a stupid one, but I've go a question about CGMiner and DNS.  Obviously CGMiner makes use of DNS to establish connections to pools when it starts up.  Once the connection is made and the mining process starts, does CGMiner need access to a DNS server on an ongoing basis??  The reason I ask is that we are making some changes in our server room that will require our DNS server to be brought down for an hour or so, and I was curious if this would disrupt my miners.