Comment 6 for bug 390508

+1 (for the above comment)

It's also hugely misleading. I followed documentation, and spent a fair amount of time trying to get it to work before coming across this thread.

Can you either:

a) Fix the documentation and remove that we can change the timeout

b) Make the notification timeout override-able.

b is would be preferable. As mentioned above I can't see why you would want to restrict it. Some applications, if posting a warning or error for example, may want the notification to show for a little longer in case the user misses it.