It seems that there is a bug getting around to everyone's iPads these days. When you open Safari and go to certain websites, the MISD iPad Apps for one, it gives you an error message that says that you should call a number and then your iPad gets all locked up in Safari!
The message could possibly look like this:
Here is the solution:
Push the Home button and return to the Home screen. Tap on the Settings app. On the left-hand side, scroll down (slide up) to Safari. Tap it. On the right-hand side, you will see Clear History and Clear Cookies and Data. Tap on each one. Now you should be able to work on your iPad freely again!