Open source: Red Hat releases Fedora Core 5, which brings desktop applications, security capabilities and virtualization technologies. The Eclipse Foundation says that Sun Microsystems is still welcome to join and, no surprise here, Sun rebuffs the invitation. Security: Researchers at Sana Security warn of a ‘Trojan Hearse’ carrying a Trojan Horse and a rootkit that masks the malware from antivirus programs. Dubbed hearse.rootkit, the virus lurks in the background until a user visits a Web site requiring authentication, at which point it communicates with a Russian server. Microsoft, meanwhile, is working an update to IE 6 that will fix two known vulnerabilities and will possibly be available in April. Columnists’ corner: Sparked by Amazon’s new storage service, Jon Udell takes S3 for a test drive, and explains how it fits into the bigger picture of the ‘energy Web.’ The news beat: Microsoft delays the general availability of Windows Vista until after Christmas, but says it will release the forthcoming OS through business partners in November. Apple calls a proposed French law state-sponsored piracy. And a study finds that e-mail customer support is deteriorating. Technology Industry