User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2b3) Gecko/20091115 Firefox/3.6b3 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2b3) Gecko/20091115 Firefox/3.6b3 Current behavior : When Firefox has no network connection, it automatically goes into "Offline" mod and refuses to load pages. This is problematic in the following use cases: - when using e.g. Google Desktop, which displays its results in a web page loaded via 127.0.0.1. - for web developers working offline and testing applications (minor problem, see workaround). Many users have raised the problem (see e.g. https://bugzilla.mozilla.org/show_bug.cgi?id=440527). Current workaround : The user must manually exit the offline mode to load such pages; this is misleading, because the user will then get errors when loading remote pages. Proposed solution : When in offline mode, Firefox should accept to load local pages (localhost or 127.0.0.1) Reproducible: Always

Appears to be a duplicate of Bug 87717

Yes, a dupe.