Blackboard Users:

The short version:
On April 11th Microsoft released an update that affects the way Internet Explorer handles certain functions.  You may see a message while you're in Internet Explorer saying you need to activate a control.  If you see this message follow the instructions to press either the SPACEBAR or the ENTER key to activate the control.

If you want more detail, read the notice below from Blackboard.

Notice from Blackboard:
On April 11, Microsoft is releasing an update in response to patent litigation between Microsoft and  Eolas (http://msdn.microsoft.com/ieupdate).  The update also includes critical security fixes for Internet Explorer. Most users will receive this update automatically via Windows Update. After the update, users will be required to activate applets, ActiveX controls and other embedded objects and plug-ins before they can interact with them. Activation requires hitting the space bar, pressing the enter key, or using the mouse to click on the item. Users running the Firefox or Safari web browsers will not be affected by this update.   Issues arising from this Microsoft update will affect many sites across the Internet.

We have reviewed the Blackboard application in anticipation of this update, and have learned the following:

General issues affecting all products:
Embedded content (including video, audio, Flash) cannot be controlled until activated. Each item is framed with a window that prompts the user to "Press SPACEBAR or ENTER to activate and use this control." After users follow the instructions or click using their mouse; users can use the controls to start, stop or replay embedded content.

An item that contains an equation, or was created from the Equation Editor, will launch a text window that prompts the user to "Press SPACEBAR or ENTER to activate and use this control." The equation will still render on the page.

In general, our testing has uncovered increased instability with the IE browser after this update has been applied.  We are escalating this issue with Microsoft.   Blackboard Academic Suite™ & Blackboard Community System™ (Versions 6 and 7, including Application Packs).  Each Visual Text Box Editor (commonly known as "WYSIWIG editor") will require activation prior to entering text.  The Virtual Classroom and Lightweight Chat applets will require activation after a student or instructor joins a chat.  The Blackboard Content Player (SCORM) feature fails to function after installation of the Microsoft update.