The latest version of Samba, 3.0.26, removes a moderately critical vulnerability that only occurs in combination with Microsoft's Active Directory Service.
The Xeon 7300er processor family is Intel's first quad-core processor for multiple processor servers. The energy efficiency of the new processors differs depending on the speed with 2.93 GHz requiring 130 Watts compared to 50 Watts for a 1.86 GHz version.