Here are some recently released KB articles you may find interesting - enjoy!

http://support.microsoft.com/?kbid=947465
Error message when you try to use Windows Meeting Space on a Windows Vista-based computer: "Group Policy might be preventing you from changing firewall settings"
1/24/2008
Win Vista Ultimate 32bit AL

http://support.microsoft.com/?kbid=947235
Error message when you try to access a mapped drive that is mapped to a Windows XP-based computer from a Windows Vista-based computer: "System error 5 has occurred"
1/24/2008
Win Vista Ultimate 32bit AL

http://support.microsoft.com/?kbid=947366
Error message when you try to install Windows Vista Service Pack 1: "Installation was not successful" or "An internal error occurred while installing the service pack"
1/23/2008
Win Vista SP 1 AL

http://support.microsoft.com/?kbid=947218
Successful authentications occur even though the authentications do not participate in Network Access Protection on a Windows Vista-based computer
1/22/2008
Win Vista Ultimate 32bit AL

http://support.microsoft.com/?kbid=947228
Error message when you join a Windows Vista-based client computer to a top level domain (TLD) that has a purely numeric suffix: "An Active Directory Domain Controller for the domain <DNS domain name> could not be contacted"
1/22/2008
Win Vista Ultimate 32bit AL

http://support.microsoft.com/?kbid=947231
After you create a VPN connection through a dial-up connection on a Windows Vista-based computer, VPN credentials are not cached
1/21/2008
Win Vista Ultimate 32bit AL