-> Close Firefox (click Firefox button and click Exit)

-> Start Firefox in Safe Mode by holding down SHIFT key while starting Firefox

• As an alternative method, use Win + R key combination and enter one of the

following in the Windows Run box:

• • firefox -safe-mode
  • "C:\Program Files\Mozilla Firefox\firefox.exe" -safe-mode
  • "C:\Program Files (x86)\Mozilla Firefox\firefox.exe" -safe-mode

-> Firefox Safe Mode window will appear -> DON'T SELECT ANY OPTIONS, just click Continue in Safe Mode

Troubleshooting extensions and themes

• https://support.mozilla.com/en-US/kb/Troubleshooting%20extensions%20and%20themes

Check and tell if its working.

Thanks. I did that, and disabled the QuickTime and RealPlayer plugins. The loading time improves slightly. All other plugins are updated and none of them are unnecessary. What should I do now. Once one instance of the browser is opened, the second and more open almost instantly. Does that give you any clue?

I think either some Add-on is causing that problem OR its a Malware issue.

Troubleshoot your problem as suggested in my previous reply.

Did that. Checked very aggressively for malware. There is none. I do run a very clean and well-organised machine. Loading Firefox in safe mode reduces the loading time but not by much.

Firefox takes a long time to start up

• https://support.mozilla.com/en-US/kb/firefox-takes-long-time-start-up

Check and tell if its working.

No, it's the same. Anyway, it is not all that slow. I'll live with it.

Just for comparison purposes, Create a New Profile as a test to check if your current profile is causing the problems.

-> Basic Troubleshooting: Make a New Profile

• https://support.mozilla.com/en-US/kb/Basic%20Troubleshooting#w_8-make-a-new-profile

-> If that New Profile works then you can recover your Bookmarks and Passwords from the Old Profile.

-> Recovering important data from an old profile

• https://support.mozilla.com/en-US/kb/Recovering%20important%20data%20from%20an%20old%20profile

Check and tell if its working.

Yes, creating a new profile and migrating all data from the old one has solved the problem. A million thanks.

-)

Glad to hear it

Done, thanks again.