Office button constantly flashing

I have created an Access 2007 SP1 app that will be distributed to home
users. I am currently only testing on Win XP Home and Win XP pro both
with Runtime only and Full Access. During testing, I have found that
the office button on the top left of the screen flashes constantly.
While flashing, the cpu usage is up at 60%-75% for msaccess.exe in
Windows Task Manager. This is only a problem when I launch the
application from an account that I did not use to install the
application originally. I get the same behavior whether I launch the
app in Admin or Limited User accounts. To stop the flashing, I must
click on the Office Button at least once. Then the cpu usage drops
and everything is fine. Does anyone know what could be causing the
problem? Do I need to set a registry key in my deployment package
that would prevent the flashing and high cpu usage? Thanks in advance
for any advice.