A number of users that are currently using a spreadsheet I have developed
have found that when launching ANY Microsoft Office product, the licensed
user has now changed to my name.

This also means that when a user is in the workbook on a shared area/drive,
and a second user attempts to open the workbook - the box stating that the
'file is in use by' has my name in and not the users.


The spreadsheet uses VBA to create a tool bar on the fly, deleting it when
the workbook closes. None of my code directly writes to the registry.

Are there any known issues that could cause this problem?


Thanks in advance for any help you can provide me with.


Darren.