For a pre-Beta, Win 8 is impressive, but it freezes after a period of time - often while in media player. The O/S has been clean installed, over installed and refresh installed repeatedly. Search is disabled via services.msc. Live tiles and various contact-the-net or sharing options are also disabled. After the last refresh (from ISO CD), the system ran well for over a day, then stalled after about 90 minutes of WMP play. When this occurs the mouse is still active and a few items will respond to clicks. Most don't. Often after a freeze, but not always, the NTFS file system on partition 1 (W8) as well as that on partition 2 (files) are corrupt. A second drive (W7) suffers the same fate. I.E.: the freeze hoses everything. Event Viewer offers nothing that seems to be related. Suggestions and thoughts welcomed.