Description of problem: The `about:' page has the Gecko engine version printed as Gecko/0000000000 despite the correct version is sent for the `User-Agent' header over the wire. Version-Release number of selected component (if applicable): firefox-2.0.0.10-3.fc8.x86_64 How reproducible: Always. Steps to Reproduce: 1. Type URL: about: Actual results: Build identifier: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.10) Gecko/0000000000 Fedora/2.0.0.10-3.fc8 Firefox/2.0.0.10 Expected results: Build identifier: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.10) Gecko/20071213 Fedora/2.0.0.10-3.fc8 Firefox/2.0.0.10 Additional info: This version sends over the wire: User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.10) Gecko/20071213 Fedora/2.0.0.10-3.fc8 Firefox/2.0.0.10 The problem does not affect: * epiphany-2.20.2-1.fc8.x86_64 Mozilla/5.0 (X11; U; Linux x86_64; en; rv:1.8.1.10) Gecko/20071213 Epiphany/2.20 Firefox/2.0.0.10 * galeon-2.0.4-1.fc8.1.x86_64 Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.10) Gecko/20071213 Galeon/2.0.4 Firefox/2.0.0.10 It can be even seen in Bug 401881 Comment 8. :-)