Out of Time?
If you are taking a timed exam using Internet Explorer 8 the timer tends to cover up the Submit button on the test. This is a "known issue" with Blackboard and they hope to soon have a patch to correct the problem. In the meantime, setting your IE browser to "Compatibility Mode" will help you avoid the problem. To use Compatibility View: From the IE 8 Tools Menu, select Compatibility View Settings. Enter your Blackboard URL in the Add This Website field and click Add. Then, click Close.
Or for a simpler solution, use the Mozilla Firefox browser or another browser besides Internet Explorer 8.