I'm not sure exactly what you are meaning here, but no, there is no way to find a laptop from Firefox information.

Maybe your ISP has a log that contains the MAC address of the network card (some may have a generic MAC number), but that would only be correct if that computer has been connected directly to internet and not via a router.

If you were using Firefox Sync then that computer may still be accessing the Sync server.

I want to use mac address(Physical address) of my pc to found it, but I need that address, so, did firefox log that address? Is any file where can I found it?

The Mac Address isn't a physical address of where your computer is, it's just a number that uniquely identifies your computer's hardware. http://en.wikipedia.org/wiki/MAC_address so even if you have the mac address that isn't going to give you a specific location of your computer. I'd suggest contacting your local police department and discussing your options.

I know this, but with that address is a chance to found my pc in my local network(my internet is provided in a big network, about 150-200 pc's) were I think it is, is a small chance, is the only chance to found it ...