On 01/12/2015 06:40 AM, Rushton Martin wrote:

Another Firefox "funny" to be aware of occurs if you have a $HOME shared between multiple machines. Firefox will refuse to start on the second machine whilst the first is running Firefox, it believes that there is already an instance running. Rebooting the second machine will not help. The quick-and-dirty way around this is to log in as a different user (and hence different $HOME) on the second machine.

Or use a second profile, 'firefox -ProfileManager'.

-Thomas