Ghost shared link in Finder

Hello everyone,

I just bought a MacBook Air with Lion on it and after I configured the wifi network on it I found out that in finder shared I have my WD Network HD twice. One under its name "BackupNico" and one another under "BackupNico-backup".

I can connect on the first one but can't on the other one, neither can I change the connexion ID. I can't trash it either (get error 8058 when I try).

Any idea to fix that ?

Thanks for your help

Nicolas