IP telephony deployments struggle with power\/heat issuesVoIP is all the rage, and network equipment vendors are offering Power over Ethernet on many LAN switches to deliver electricity to IP phones. But when you add up all those phone lines, suddenly you have high power requirements - and all the resulting heat generated by the power - concentrated in wiring closets that didn\u2019t have those issues before. See Network World\u2019s Phil Hochmuth\u2019s full story.RFID tags are subject to viruses, study saysSpeaking of hot technologies, researchers warn that RFID tags could be vulnerable to a \u201cPandora\u2019s box\u201d of viruses. Wonder if RFID proponent Wal-Mart thought of that one? Click here for details.Spring VON: Internet innovation relies on light regulation, say 'Net neutrality supportersGiving major network providers greater control over what can and cannot travel over public IP networks will stifle the innovation that brought about the Internet in the first place, according to speakers at the Spring 2006 VON conference in San Jose. Click here for more.Red Hat lays out virtualization plansRed Hat Tuesday laid out its strategy to make it easier for customers to run and manage workloads in a virtualized Linux environment. Click here for more.Researchers: Impact of censorship significant on Google, other search engine resultsIndiana University researchers have created a Web site that highlights differences in query results provided by country-specific search engines, such as the version of Google built to accommodate China's free-speech restrictions. Click here for more.Cisco blazes trails at sandwich shopsLes White's 26 Subway sandwich shops in southern Arizona serve old-fashioned lunch favorites, but they are on the cutting edge of what Cisco wants to see happen in small and midsize businesses worldwide. Click here for more.For news updated throughout the day, go to Network World's NetFlash news page.