Anyway, I felt that there was something wrong and was not sure that it was do to the
Firefox Upgrade or the recent Windows Update, where it failed on the first attempt since there are two large downloads, for I.E., so I down loaded the security updates only.
The PC was hanging up and I decided to restore, the restore must have wipped out some of the Firefox essentials with the back step, and I could not get it to open, so I reverted the restore, and is working again,
however for your information, . . I believe that the installation dates of of the MCS Frameworks are changed,(see image-1) however assuming they are the original framework installation with the dates changed to the date of the restoration, why is that not so with the 3.5 SP1 Installation, etc. (see the image-2)