Mozilla release an emergency update for Firefox 32.0 on September 18th, 2014 with Firefox 32.0.2. This release addressed these bugs:
- Corrupt installations cause Firefox to crash on update
Please see the release notes for full details.
Depending on update settings, users will be prompted to update to version 32.0.2 or can do so via Help > About Firefox or going to getfirefox.com where they can download and manually install the latest version of Firefox. The next planned release will be Firefox 33 on October 14, 2014.