Hi dinodon

check Firefox settings in privacy tab, conflicting extensions and your Internet security software (including antivirus, antispyware, firewall)

see for more info : Firefox won't remember addresses, phone numbers and other text

thank you

Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

Tried it all. What makes no sense is I have another laptop with the same system and it has no problem.

Try to check it in Safe Mode, select "Start in Safe Mode" and see the results, if working in safe mode then see: Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems

thanks again

I'm sorry, but if all add on are disabled how is this supposed to troubleshoot the Autofill forms add on ?

https://addons.mozilla.org/en-US/firefox/addon/autofill-forms/