The SeaMonkey help content needs to be updated because of the changes in Bug 441050. The changes were: 1. In nav_help.xhtml, section "Changing Default Browser Settings Automatically" We no longer have a default browser dialog, but a general default client dialog, which asks for Browser/Mail/News. When an item is checked (even it is disabled because we are already the default), we will check on next startup if we are still the default for that app type. The section "Customizing Default Browser Settings" should be merged/removed as we no longer offer this. 2. In cs_nav_prefs_advanced.xhtml, we added a new pref directly under "Advanced" where you can enable the default client dialog again in case you disabled it in the default client dialog.