I have had this problem before, and it seems to be related to Softex Omnipass.
Uninstall Omnipass, then reinstall it to remove the duplicated user icon.
On a different note, grab the Lenovo N200 fingerprint reader software for seamless integration with Vista. It'll work with your N100 Authentec fingerprint reader. It's also much faster to recognise your fingerprint. The only drawback is that you won't be able to store passwords for programs and web pages as you could with Omnipass.
Edmund Tse
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