Power-over-Ethernet switches, servers replacing key phone systems make data center hotter.
* Red Hat's virtual vision
PoE switches, servers heat up data centers.
RFID, wireless and IP networks in factories promise savings and productivity, but back-end systems are critical.
* Xandros releases Xandros Desktop OS 3.1
* Vyatta is but one of many open source network devices available
* Ellison says big vendors made Linux and open source what they are today
* Vyatta touting commercial version of the XORP software
