User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Q312461; SV1) Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10 According to the release notes (http://www.mozilla.org/products/firefox/releases/ under "Changes You Should Be Aware Of - Profile Folder") then Firefox stores user data under Documents and Settings\<UserName>\Application Data\Mozilla\Firefox Firstly, strictly speaking you should store user data under %USERPROFILE% \Application Data\Mozilla\Firefox so that the location of the profile can be specified as a part of the users' environment. Secondly, you should only store permanent data in this location, not temporary data, such as the cache. Temporary data, in particular the cache, should be stored under %USERPROFILE%\Local Settings\Application Data\Mozilla\Firefox This is in particular important on networks where users have roaming profiles. Copying the cache back and forth between different computers serves no purpose and creates delays during log-in and log-off that users find unacceptable. Reproducible: Always Steps to Reproduce: 1. 2. 3.

*** This bug has been marked as a duplicate of 74085 ***