Did you use a calculation field for this? Is it an unstored calculation field?
Stored calculation fields and fields with auto-enter calculations that use get functions will not automatically update.
I used a calculation and as a text field. Neither one worked. There really is no way to sort becase it is a Main Menu page and there is only one.
To repeat, you cannot use a text field with an auto-entered calculation to show the current user's account name.
You cannot use a STORED calculation field to show the current user's account name.
You must use an UNSTORED caclculation to show the current user's account name. In the specify calculation dialog, you'll find a storage options button that you can click to make the calcualtion and unstored calculation.