Why does my workbook pop into VBA when unlocking my terminal

[Beryl]

I have the ability to lock my workstation and when I unlock it, the Excel workbook pops into the VBA Editor even if I was not there when I locked the workstation. I must have inadvertently turned something on to make this happen.....but I don't know what I did !
I hope this is an easy question...

Any help is appreciated !

 

[Beryl]

Well - I'll answer my own question. It seems it was a memory issue; when I rebooted the computer, this problem went away.
In case anyone else runs across this problem !