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...
clean install
corruption
event viewer
file system
freeze
interaction
iso cd
media player
ntfs
performance
pre-beta
refreshinstall
response
services
stall
system issues
troubleshooting
user feedback
windows 8
wmp