Firefox is already running, but is not responding?

[pmam]

Hi,

"Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system."
I get this message and can not start FireFox/aurora - Restart not help and do not find a solution in google...
_________________
“You can take our property, our sweet homes, even our cloths...
But don't touch the streets, Ah, That's NO, NO, NO!
The streets are our @world's compilable kernel ...”

[pmam]

Quite strange but this issue has to do to problematic mount line of /etc/fstab -
Once I deleted this line, FireFox start working...
_________________
“You can take our property, our sweet homes, even our cloths...
But don't touch the streets, Ah, That's NO, NO, NO!
The streets are our @world's compilable kernel ...”