Every time I come to any web page where data has been remembered by the password manager, I am prompted twice for "Please enter the master password for the Software Security Device", and once more after I hit the button to continue on the page. This happens despite having set the Master Password Timeout in preferences to "The first time it is needed". I believe this started happening in version 0.9.7, and it is still happening in 0.9.8.

This problem has been fixed. However, once it started happening, it horked your preferences, so you will keep seeing it even with later builds. Start a new profile and the problem will go away. See comment 35 in bug 114895. *** This bug has been marked as a duplicate of 114895 ***