There are numerous plugins for Firefox, some of them are very useful as they provide anti-tracking, security and privacy related features.
Nevertheless there are some websites having problems with these plugins. Private browsing mode is not an option in this case as by default most of the plugins are activated there too. If you just need to get things done quickly usually its the best to start with an empty profile in this case.
start_firefox_cleanprofile.py does exactly this: It starts firefox with an empty profile. All you have to to is to create a profile with the name “clean” before the first use:
$ firefox -ProfileManager
[Create a new profile with name “clean”]
$ start_firefox_cleanprofile.py
profile folder: /home/user/.mozilla/firefox/xxxxxxxx.clean
On every start the script wipes out the profile folder, deleting any traces of a previous session.