• Mapping to T: drive must be set, and checked here. Set the settings  and click create share..
• Do not ask ID or local PC support to do this without asking DSAT/CSH first if you have problems.
• This share process is a special share, as well a mapping a drive to t: unc shares are set to the log files locations
• After the Mapping to the Share is set with  Create Share, set your default file locations to T:\<your TLA>
• Where the server uses domain security and you are a member of a mapped security group of the same domain with access to the share, "Use Domain Credentials" should be ticked. 
  You cannot then enter a user and password.
• Where the server uses domain security and you are NOT a member of a mapped security group with access to the share, "Use Domain Credentials" should NOT be ticked. 
  Enter a supplied user and password code in the form user@domainname e.g. fred@xx.health.qld.gov.au and the password supplied. Use the full domain name
  This information WILL HAVE BEEN SUPPLIED TO YOU!!!
• Click create mapping.. if it does not work, try mapping to the share using windows, and map it as a network drive letter. 

the Boot report for any machine (emailed when any user logs in an mail settings are correct)

shows this..

if "Users" registry settings are not correct you will get this