Stories by: Kevin Fogarty

Only about 20 percent of Americans think Macs are vulnerable to viruses, compared to more than half who describe PCs as "vulnerable" or "very vulnerable" to attack by viruses, according to Alex Stamos, a security analyst at iSec Partners.

IT people who try to secure mobile devices in a big company face three big conceptual problems.

When VMware announced last week that it would loosen the radical change in price structure it announced only a month ago, it was doing more than mollifying a few disgruntled customers. It was responding to a revolt among customers, analysts say, even at large companies that rarely considered competing virtualization platforms due to VMware's lead in the technology.

If two technology trends were ever made for each other, at least in vendor marketing materials and generically simple diagrams of IT infrastructure, they are the consumerisation of IT and desktop virtualisation.

Surveys of senior IT managers consistently show that Cloud computing and software as a service (SaaS) are being tested or used for non-critical applications at fewer than half of U.S. corporations.

Until recently, almost no IT industry vendor or analyst questioned the assumption that nearly all kinds of virtualization deliver quick, significant cost savings compared to computing only in the physical world.

Virtualizing and consolidating data-center servers provides such clear a financial benefit that there are few companies of any size, in any industry that shouldn't virtualize at least some of their servers and applications, industry analysts say. But companies that start virtualization projects looking for cost savings, without planning for a second phase of migration that requires spending more on new tools than the project might save in short-term costs, will get stuck in phase one -- saving money on hardware, but getting only a fraction of the benefit of the virtualization products they've bought, analysts add.

Neither cloud computing nor virtual servers were intended as agents that would change traditional IT organizations, says Rachel Dines, a researcher at Forrester Research (FORR) who specializes in IT infrastructure and management. But IT organization and management issues are turning out to be nearly as important as the technology itself to making large-scale virtual-server migrations effective.

Neither Cloud computing nor virtual servers were intended as agents that would change traditional IT organisations, says Rachel Dines, a researcher at Forrester Research who specialises in IT infrastructure and management. But IT organisation and management issues are turning out to be nearly as important as the technology itself to making large-scale virtual-server migrations effective.

It's unlikely that hordes of VMware, Citrix or Microsoft Hyper-V users will flock to open-source virtualization or cloud-computing platform as an alternative to the hypervisors and virtualized infrastructure-management software they've already chosen, analysts say. So where does open source fit in the cloud world? Think lock-in and migration flexibility.