hi, this might be a permissions issue on your linux environment - is there full write-access to your profile folder and the files in there?

Thanks for the reply I do have full read write and execute permissions on there as the user I have -rwx r-- r-- user group prefs.js

and the same on the folder/directory too.

mirah said

Thanks for the reply I do have full read write and execute permissions on there as the user I have -rwx r-- r-- user group prefs.js and the same on the folder/directory too.

And more over it does not do it everytime sometimes it creates the extra numbered files sometimes I see the size of prefs.js file also increases

Try to rename the ~/.mozilla/firefox folder and let Firefox create a new profile folder structure. Also make sure that you do not start Firefox as root user.

I have customization and extensions in place which I would want to stay . Any other idea to go about that ....