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Re: Firefox won't open on more than one computer



Karl beat me to it and I pretty much agree with him. The only detail I'll add is that the way Firefox keeps track of this is a hidden file stored at:

~/Library/Application Support/Firefox/Profiles/{random string}.default/.parentlock

that it uses as a flag. It is actually a symbolic link to an IP address - it has no contents. The IP address part is so that it can tell if you are just relaunching Firefox on the same Mac (say after a crash) in which case it will launch without problem, or if you are trying to launch a 2nd instance of Firefox that is using the same network mounted home directory on a different Mac and it will complain.

Tom "Macintosh Doctor" Johnson
email@hidden


On Nov 6, 2009, at 12:06, Karl Kuehn wrote:

On Nov 6, 2009, at 8:56 AM, Lynne Pariseau wrote:

10.4.11 server, WGM, 10.4.11 clients -- I was going to switch from Safari to Firefox as my main browser. I think someone mentioned this issue before -- when I try to launch firefox on 2 computers or for the 2nd time on the same computer, I get the message "a copy of firefox is already open....." any ideas on the solution to this problem?

Are you using network home directories and having everyone log in with the same user? If so, then this is expected behavior. Firefox is trying to save you form the problems that can occur when multiple processes try to write to the same files at the same time. Firefox is not the problem, it is just warning you not to do something you should already not be doing.


Either use local home directories, or separate accounts (for each computer if not for each user). There are undoubtably better solutions to the problems you are trying to solve by having everyone log into the same user.

--
Karl Kuehn
email@hidden
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References: 
 >Firefox won't open on more than one computer (From: Lynne Pariseau <email@hidden>)
 >Re: Firefox won't open on more than one computer (From: Karl Kuehn <email@hidden>)



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