1. Open your profile folder
2. click the menu, select help then select troubleshooting info
3. application basics, click show folder.
4. click the menu button and hit exit
5. find cert8.db and press delete, then restart firefox
Windows decided it wanted to make its own family filter. The bad thing though is with most things, they kinda just threw it out there without really working on it (ie: checkign ti with other browsers) so the link i gave you takes you through the steps of creating the certificate to stop the annoying filtering.
mail.yahoo.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. (Error code: sec_error_unknown_issuer)
1. Open your profile folder
2. click the menu, select help then select troubleshooting info
3. application basics, click show folder.
4. click the menu button and hit exit
5. find cert8.db and press delete, then restart firefox