For your day-to-day activities, that is. The blog post below points this out one more time:
NEWS: “Removing end user admin rights eliminates 92% of vulnerabilities”
This advice holds independent of operating system, version, etc. I do believe though that Vista’s User Account Control (UAC) provides significant security and usability benefits by allowing people to easily provide administrative credentials or elevation of privilege to selected processes.
Sven Aelterman 