User Agent: Mozilla/5.0 (X11; Linux i686; rv:15.0) Gecko/20100101 Firefox/15.0
Build ID: 20120828083103
Steps to reproduce:
I suspended the system (Linux Fedora 17 i686).
When thawing Thunderbird didn't come up (this looks like an issue but it isn't and neither is the subject of this bug report). So when I clicked its launcher an error dialog popped-up with something like (didn't write it down but the problematic message is literal):
"Thunderbird is already running. If you want to open another window please close it first or *restart your system*."
The highlighted *restart your system* is completely wrong! At least not in Linux, maybe in Windows or a mobile phone, but in Linux we just kill the process, restarting the system is waaay overkill for Thunderbird just failing to open its GUI.
Some sensible error message tailored to the operating system like "...please close it first or stop its process in the task manager..."
I haven't used Windows for ages but maybe even for it the message should be fixed (that's why I put this report under 'General' instead of 'OS Integration'.
This error message is for user that don't know much about processes and such stuff.
I thought that "linux is only used by geeks" is no true anymore.
Sorry for only answering now, your response had gone into my trash folder :-p
I see the point, that 'restart your system' is a catch all message but it's so overkill that I can't help but feel that it could be improved.
Like many people, even in Windows, should know about the task manager.
It's of course overkill for people who now a bit about their OS and I would agree that the message should be changed but on the other side i know that people like a grandmother could have problems with a changed Error Message.
Note: The error message is shared with other Gecko Products (Firefox, Thunderbird, Seamonkey) and is used on every OS (Windows, OSX, *nix)