I'm looking forward to this
Finally Windows 7 will be reliable and not require a reboot twice a month!
Sure, there's a risk if you use Windows 7 on the internet but that can be mitigated by living behind a decent firewall (not Microsoft's marshmallow firewall) and using the system for work, not browsing. My Vista systems work great and XP too ... I support our users around the world with older systems, many of whom have science applications that only run on XP and were never rewritten for newer versions of Windows.
It used to be that Operating Systems were written to work, but that doesn't happen any anymore. Regular updates indicate that the OS was written by idiots if the updates are actually required to fix serious bugs, not add "new features" (with new bugs). I never had any issues or virus infections while running and using CP/M, RSX11M or RTS every day for years.