IBD published a Q&A with Nora Denzel, who you might remember we spoke to back in January. IBD says the systems management market is led by HP, along with IBM, BMC Software and CA. Denzel says the Big Four are vulnerable to open source. A Gartner survey found that more than half of respondents would consider open-source alternatives, up from 29% in a 2004 poll. Previously: On Open Source IT Systems Management - Q IBD published a Q&A with Nora Denzel, who you might remember we spoke to back in January. IBD says the systems management market is led by HP, along with IBM, BMC Software and CA. Denzel says the Big Four are vulnerable to open source.A Gartner survey found that more than half of respondents would consider open-source alternatives, up from 29% in a 2004 poll. Previously: On Open Source IT Systems Management – Q&A with Nora Denzel (formerly of HP OpenView fame) Open Source