Computers age quickly and sometimes are unable to keep pace with rejuvenated software made more complex with every release. We examine the total cost of replacing compared with upgrading your machines.

Many applications interrupt the CPU when it tries to sleep. PowerTOP not only identifies these evildoers but also provides tips on how to get rid of them.

Managing patches, service packs and updates in a heterogeneous environment is one of the leading causes of sleep deprivation among system administrators. The big question is, “How do you manage patches in a complex environment?”

AMD is poised to announce a new generation of processors, including the Bulldozer series, which is targeted for data centers and HPC implementations. We asked John Fruehe, AMD's Director of Product Marketing for the server and embedded space, for an inside look at what's coming with Bulldozer and what it means for HPC vendors and customers.

The common Apache benchmarking tool known as ab can carry off a highly effective DoS attack if you're not prepared for it.

Penetration Testing and security auditing are now part of every system administrator's "other duties as assigned." BackTrack Linux is a custom distribution designed for security testing for all skill levels from novice to expert.

The elegant Lisp is known as a beautiful, but not always approachable, programming language. Conrad Barski's Land of Lisp is a smart and accessible guide to the enigmatic functional programming language.

Intruders rely on arp cache poisoning to conceal their presence on a local network. We'll show you some of the tools an attacker might use to poison the arp cache and gather information on your network.

Google+ isn’t officially ready for corporate use, but users are already excited about what this new social networking platform means for the workplace. We look at how you can leverage Google’s latest product for business and work around its limitations.

The Intel VT and AMD-V extensions bring x86 virtualization to the 21st Century. Learn why hardware-assisted virtualization is important and what to watch for the next time you buy a computer. We'll also show you how to configure virtualization on a typical Linux system.