Question : SSO Internet Explorer and Sharepoint Services 2008

I have an interesting issue.  Occasionally we have random users who are prompted to log in to the share point services portal.  When they get prompted with this the only fix is to delete the user profile and recreate it in windows XP. Then it works again

Any thoughts as to why this might be happening or better yet a more permanent fix?

Server 2008 and Sharepoint Services
Client Windows XP SP2 IE 7

Answer : SSO Internet Explorer and Sharepoint Services 2008

NAMEWITHELD12,

wakeup agent should be used if you want to 'activate' your policies at the client.

abhilash94, please don't give such ridiculous solutions...