We are running a Windows Server 2003 environment with 7 servers running on Cisco 3750 switches. We have been having problems with some of our network devices losing their network connectivity intermittently, not the same building or switch. They seem to go down within seconds of each other and reconnect at the same time. We have run IP ping logs and are unable to locate the problem. The servers do not lose connectivity and not all devices are experiencing this problem. The devices that are noticing this problem are those with static ips.