CorinneR,
So sorry you are having problems with your Droid 2! I can understand your frustration, and would be more than happy to assist.
Have you installed any type of "Antivirus" applications to your phone? There was an issue with Antivirus apps causing these types of issues with Android phones. If so, I would suggest to remove the application and test your phone again. I am including instructions how to uninstall applications in a link below:
If you are still having issues after this step I would try a Hard Reset of the device. This step can eliminate any possible corrupt file or application on the devices internal memory. I am also including a link with instructions and screen shots for the reset below:
Let me know how this works out for you!