User Name on the upper right corner

Hi,

We have a lot of SharePoint 2010 site collections tied with the same navigation in the home page. I had my name initially misspent in AD. It has been since corrected. I see my name apper correctly on most of the site collections. But in one, it still appears wrong.

I checked in the corresponding catalog (_catalogs/users/simple.aspx) page. I cannot see my name here.

And my name is correct in user profile.
What other place I need to check to determine where the user name come from. It seems the name is cached someone.

Thanks, Soumya | MCITP, SharePoint 2010