Try optmizing your browser.
Follow the suggestions on this Knowledge Base article.
How to Optimize Browser.
http://support.microsoft.com/kb/936213
nene70,
Thank you for visiting the OneCare forum for Install and Activate issues.
Are you still unable to activate?
Please contact OneCare support
How to reach support (FAQ) - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=2421771&SiteID=2
What is your operating system and what browser are you using?
-steve