is not possible. Sound events for Blocked pop-up window and the Information bar in Internet Explorer were introduced. DirectX 9.0c (Shader Model 3.0) was introduced. A File System Filter Manager and minifilter drivers were installed. Compared to the legacy file system filters, they are easier to develop, offer better stability and can be loaded and unloaded at any time. They reduce recursive I/O on the kernel stack and can process only necessary operations. Legacy file system filter drivers attached to the file system stack directly and didn't have the aforementioned flexibility. Additional functionality for Offline Files via registry modifications was introduced. By editing the Registry, users can suppress error messages for file types that Offline Files cannot cache and which are excluded from synchronization. Offline Files for a user that are not on his primary computer (determined by matching the current user's SID with the specified SID in the registry) can be set to purge at logoff. Administratively assigned offline files can also be prevented from being cached for non-primary users. Windows Media Player 9 Series with Windows Media Format Runtime 9.0 was included, with the ability to later update the Media Player and Format Runtime to versions 10 and 11. There is basic but production quality support in Windows XP for IPv6 and Teredo tunneling through the Advanced Networking Pack. Improved ACPI processor performance states for multi-core processors was installed. Windows Movie Maker 2, a free download released in 2002, was introduced, replacing Windows Movie Maker 1.1. Support for DVCPRO50 and DVCPRO100 was installed. A YUV mixing mode in the VMR-7 and VMR-9 renderers which performs mixing in the YUV color space to save memory bandwidth was introduced. powercfg.exe, a command-line utility allowing users to control settings related to power management, such as hibernation or creating power schemes, was introduced. Most of this functionality is available in a more user-friendly form in the Power Options dialog under Display Properties, however. Significant security-related changes to MSRPC, DCOM, MSDTC and WMI were introduced. Attachment Manager was introduced. Windows Installer 3.0, which also adds numerous improvements to patching such as patch uninstallation support through Add or Remove Programs, binary delta patches, patch sequencing to install patches in the correct order, installing multiple patches for different products in one transaction, eliminating source media requests for delta compression patches, patch elevation for limited user accounts, MSI source location list and inventory management APIs, and