If you’ve already downloaded Firefox 3.5, then you need to make an urgent update.
To update do the following:
- Click on “Help” in the upper toolbar.
- Click on “Check For Updates”.
- Follow the prompts.
In some cases your system will download the update automatically and then prompt you to run the patch.
Again, this is a critical update and you should not waste any time in doing it. It doesn’t take much time and will make your web browsing that much safer.