* Certain Linux operating systems
'''Note:''' [[SummerOfCode/2012/LinuxNativeWebApps|Linux support ]] just recently landed, so it is not fully tested yet on every possible Linux operating system.
You might want to run Nightly with a separate profile from your regular Firefox install (for example without your normal add-ons, etc.). See the SUMO article on [http://support.mozilla.org/en-US/kb/Managing-profiles Managing profiles].