User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b9pre) Gecko/20110104 Firefox/4.0b9pre Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b9pre) Gecko/20110104 Firefox/4.0b9pre When one update is downloaded but not applied and firefox is not restarted updating to the latest version required two restarts Reproducible: Always Steps to Reproduce: 1. Install nightly firefox (for example 20110101) 2. Wait till another version (20110102) is available 3. Make sure that update is downloaded but don't install it and don't restart firefox 4. Wait till another version (20110103) is available Actual Results: Updating to the latest version (20110103) needs two restarts - first restart will update to the middle (20110102) version, after that the latest version will start downloading and the second restart will update to the latest version Expected Results: Latest version should automaticly download even if the previous version is downloaded but not installed. Restarting firefox should install the latest version

This bug has already been reported as a couple of different bugs.