Since upgrading to Firefox 26, it has frozen multiple times when saving a web page. This worked in previous versions of Firefox on the same system. The only way to recover was to kill -9 the firefox process and restart it.
If you feel I have closed your bug and it is still a current issue, please reopen and update it completely. We will not work bugs that have no ebuild in tree any longer or can not be reproduced with a current system. Thank You for your support and understanding The Mozilla Team