How to solve cut/paste problem using Firefox or Mozilla?
The key is user.js file and the location of user.js is different between Firefox and Mozilla.
Due to your installation of these browser might be different and I found out that the direct editing of the user.js might not always work!
I found that it would be better to download this extenstion here
Once you have this extension install and after you restart your browser you would select "Tools", "Edit user files", then click on "user" tab. You will get a notepad like area where you could paste in these code
to set it for all sites use this: user_pref("capability.policy.default.Clipboard.cutcopy", "allAccess"); user_pref("capability.policy.default.Clipboard.paste", "allAccess");