To fix this problem all road got to this link:
http://alinconstantin.blogspot.com/2007_08_01_archive.html
Run gpedit.msc and navigate to:
Computer Configuration
Administrative template
System
Credential Delegation
Allow Saved Credentials with NTLM-only Server Authentication
Enable (Show: TERMSRV/*)
but why I never had to do this on any other Windows 7 machines? What is so spesial about this one laptop, where your are having this problem? A deeper look is required.