400510 - Firefox self-update always fails.

Status: RESOLVED DUPLICATE of bug 340535

(Toolkit :: Application Update, defect)

Description

[Mark Petravich]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; hu; rv:1.8.1.7) Gecko/20070914 Firefox/2.0.0.7

Every time when a Firefox update is released, if i let it automatically download an istall itself, the result is an error message when i restart Firefox. It says that some files couldn't be updated, and then tries again. It fails again and reports again, then tries again... an endless cycle. Restarting the PC doesn't help.
Sometimes i'm able to start a second window of Firefox but it is the old version.
The only solution is downloading Firefox latest version manually and installing it again. This causes a significant loss of time.

Reproducible: Always

Steps to Reproduce:
1. Click 'download and install' on the self-uupdate popup window.
2. Exit all Firefox windows after leaving some time for download and istallation
3. Start Firefox
Actual Results:  
The updater crashes and results in an endless cycle displayed above.

Expected Results:  
The Firefox should start with no problems, and it should be the newest version.