30, 2005, acknowledged that "competitors such as Mozilla offer software that competes with the Internet Explorer Web browsing capabilities of our Windows operating system products." The release of Internet Explorer 7 was fast tracked, and included functionality that was previously available in Firefox and other browsers, such as tabbed browsing and RSS feeds. Despite the cold reception from Microsoft's top management, the Internet Explorer development team maintains a relationship with Mozilla. They meet regularly to discuss web standards such as extended validation certificates. In 2005, Mozilla agreed to allow Microsoft to use its Web feed logo in the interest of common graphical representation of the Web feeds feature. In August 2006, Microsoft offered to help Mozilla integrate Firefox with the then-forthcoming Windows Vista, an offer Mozilla accepted. In October 2006, as congratulations for a successful ship of Firefox 2, the Internet Explorer 7 development team sent a cake to Mozilla. As a nod to the browser wars, some jokingly suggested that Mozilla send a cake back along with the recipe, in reference to the open-source software movement. The IE development team sent another cake on June 17, 2008, upon the successful release of Firefox 3, again on March 22, 2011, for Firefox 4, and yet again for the Firefox 5 release. In November 2007, Jeff Jones (a "security strategy director" in Microsoft's Trustworthy Computing Group) criticized Firefox, claiming that Internet Explorer experienced fewer vulnerabilities and fewer higher severity vulnerabilities than Firefox in typical enterprise scenarios. Mozilla developer Mike Shaver discounted the study, citing Microsoft's bundling of security fixes and the study's focus on fixes, rather than vulnerabilities, as crucial flaws. In February 2009, Microsoft released Service Pack 1 for version 3.5 of the .NET Framework. This update also installed Microsoft .NET Framework Assistant add-on (enabling ClickOnce support). The update received media attention after users discovered that the add-on could not be uninstalled through the add-ons interface. Several hours after the website Annoyances.org posted an article regarding this update, Microsoft employee Brad Abrams posted in his blog Microsoft's explanation for why the add-on was installed, and also included detailed instructions on how to remove it. However, the only way to get rid of this extension was to modify manually the Windows Registry, which could cause Windows systems to fail to boot up if not done correctly. On October 16, 2009, Mozilla blocked all versions of Microsoft .NET Framework Assistant from being