The second possibility could be that the exe file program from Mozilla firefox installed on the PC / Laptop that you are using is experiencing file damage or what is usually referred to as corrupt. Something like that … Does it make sense? 2. (especially with the amount of RAM only 2GB, it’s complete) This confused OS state is what ultimately makes the program process longer, OR doesn’t even respond/open at all. Now that’s why Firefox is usually still active continuously, then the user (you) re-click the Mozilla program which will cause the Windows OS to be confused. This “still active” state of firefox usually occurs due to an ongoing background update but is not finished due to a bad connection. Sometimes we don’t know that Firefox that has been closed is actually still active in the background which results in “minor conflicts” in software between Firefox and Windows OS. I put it in point number one because this is what happens the most.