A. Windows refreshes the domain list whenever the machine is
locked for more than two minutes (120 seconds). This can lead to
a delay while it does this until the user gets control of the
system again.  You can modify the amount of time it waits until
refreshing by performing the following:    1. Start the registry
editor (regedit.exe)   3. Double click on DcacheMinInterval (or
if it does not exist create of type REG_DWORD)   4. Modify
between 120-86400 seconds   5. Click OK   6. Close the registry
editor   7. Restart the computer