"Open Action Center" dialog box won't clear

It is so incredibly annoying. When it pops up (i.e. to remind me to backup my system), I can't clear the box. It stays on top of everything until a reboot. Even an end-task on explorer.exe won't get rid of it.

It's happened now on two different PC's running x64 ultimate - so I assume this is a known bug?

What does this do?
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Windows 7 Action Center is a special window located under the Control Panel, where the system gives the user a lot of useful information regarding security, problems, troubleshootings, maintenance etc. When a message gets a “Normal Priority” status, it is queued in the Action Center itself. But when a message gets a ” Important Priority” status it is sent to the Notification Area, on the desktop taskbar, so that the user will be able to see it right away, indipendently from what he is doing. Here is a simple tricks to turn off, disable and prevent these icons from appearing on the Notification Area. This first trick lets you turn-off and remove the Alert center System Icon.

1. Click Start.
2. Click Control Panel.
3. Click on the All Control Panel Items link.
4. Now open System Icons.
5. Under Alert Center, click on the Behaviour drop down menu and select Off.
6. Click OK for the change to take effect.

This second trick lets you turn off the Alert center icons from the Notification Area.

1. Click on the arrow located on the Notification Area (previously known as system tray).
2. A small window containing all the hidden icons should appear. Inside it, click Customize.
3. Look for Action Center and select Hide icon and notifications.
4. Untick Always show all icons and notifications on the taskbar located at the end of the window.
5. Click OK.

I hope this helps!

Brett M,
windows Outreach Team

I know how to turn the messages off (i.e. keep them from coming back) but, my point is that once it has popped up, I can't clear it. It seems to be a bug in Win7.