Message from Internet Service Provider consultant:
This window should NOT remain maximized on most computers.
It is SUPPOSED to remain invisible to launch time-delayed
pop up messages in accordance with an ad-supported software
product that you may have installed on your computer.
If your computer will NOT hide this big white window, you
may have spyware on your system which is interfering with
your ability to control hidden windows. Spyware also sends
you unsolicited advertising, slows down your computer and
could capture private information like credit card numbers
and social security numbers, etc.
I recommend that you install a "spyware removal" program
so you can rid your computer of these parasites.
I strongly recommend this link.
P.S. If you are experiencing a higher frequency of pop up
messages, you should definately consider downloading the
spyware removal program. It will remove all of those
annoying advertisements for good.
Some users have reported that clicking on the white screen
will make the task bar appear below.