This would be related to the Logon utilities & the GinaDLL entry. When the Logon Keyboard is in use, this "forces" the User name / Password dialog setting, and "disables" both. Here is the logic used on the Select logon and logoff options
If Use the Welcome Screen is Enabled, Fast User switching is enabled and optional. If the Use the Welcome Screen is Off, Fast User switching is off and disabled.
The relationship with all this and My-T-Pen is the GinaDLL entry (Logon Utilities Enabled in Start Menu | Programs | My-T-Pen | My-T-Pen Logon Utilities, Setup/Configure Logon Utility). When this is enabled, an String value is put into HKEY_LOCAL_MACHINE/Software/Microsoft/Windows NT/CurrentVersion/WinLogon called GinaDLL. If this entry exists, Windows XP assumes the Use Welcome Screen is not applicable, and disables it.
Original ID: PU253970

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