What role will Linux and open source middleware play in the managed services market? Gus Robertson, vice president of global business development at Red Hat, is weighing that question right now.Robertson is evaluating how Red Hat can work more closely with systems integrators, managed service providers and other key partners, according to Mark Enzweiler, vice president of global channel sales at Red Hat.I'm not predicting that Red Hat will directly enter the MSP space. Rather, Red Hat will likely follow the lead of Untangle and Calyptix Security -- two open source companies that already cater to MSPs. I don't sense that Red Hat will formally "announce" an MSP strategy -- contrary to my earlier feelings from April 2008. But I'm seeking a follow-up interview with Robertson to get some of his views on the convergence of open source with managed services.