I have a really strange problem. I have a Hyper-V host that hosts 2 virtual servers. One is a SBS2011 server. The host is losing time. 30 minutes a day. What is really puzzling is this host is a new server, that replaced another server that had the same issue. On the old server, I replaced the battery on the MB, and even replaced the motherboard, but the time problem continued. This is a new Dell R515 with dual quad core, 32 gigs. There is a Netgear GS724T gig switch, and a Cisco ASA5505 firewall. I can't figure out what is going on. The time will get further behind as time passes, so it isn't logical that is is getting time from somewhere else, since the time will get progressively further behind.