(Portland, OR)  --  Officials say they should receive more information today on a computer virus that led to a shutdown in operations at the Portland Water and Revenue bureaus.  Water Bureau administrator David Shaff tells "The Oregonian" the virus is believed to have impacted the city's Cayenta billing system, targeting computers in the Water Bureau and the Revenue Bureau.  Shaff says tech personnel are checking, but he says it's not likely that customers' personal information was compromised.