Apple has released the following updates to Mac OS X Snow Leopard:
• Mac OS X 10.6.8 Update Combo v1.1
• Mac OS X 10.6.8 Update v.1.1
• Mac OS X Server v10.6.8 Update v1.1
• Mac OS X Server v10.6.8 Update Combo v1.1
• Mac OS X 10.6.8 Supplemental Update
• Mac OS X 10.6.8 Server Supplemental Update
More info and download links here.