*Update*

ITServices has restored service to DHCP. Client systems should automatically retrieve new addresses, in the event they do not please restart your computer to retrieve a new address.
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Previous Description (2012-03-06 08:30:02):

ITServices is experiencing problems with our DHCP system across campus. This system is responsible for assigning IP addresses to client machines which in turn provides network access. Only machines with static IPs (manually set) will currently receive an IP address.

ITServices is working to resolve this as soon as possible.