The previous blog post has solved nearly all of our network Time Machine errors. Those it hasn’t solved have been related to Snow Leopard machines. All of these machines were running 10.6.1.  I can’t say for sure that that was the issue, but here is what I did to get TM running over the network on those Snow Leopard machines. Some of these steps, namely unbinding from the directory, may not be necessary, I for sure have to do it at the moment as all our bound clients use our own software update server which is still running 10.5.x, so it does not provide the 10.6.x updates.

• Unbind client from LDAP directory
• Open Terminal
  • sudo rm -rf /Library/Managed\ Preferences
  • sudo rm -rf /Library/Preferences/com.apple.TimeMachine.plist
  • Close Terminal
• Open Keychain Access (in your Applications/Utilities folder)
  • Go to the System keychain and remove the entry for your backup server.
  • Close Keychain Access
• Reboot client
• Login and run all Software Updates.
• Reboot client and continue running Software Update until all updates have been installed, even ones you don’t think you need (i.e. Camera Raw, etc.)
• Once all updates have been installed, re-join client to the LDAP directory and reboot client.
• Login as the user you want time machine to run backups as, start backups.