The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information.
Note: This will cause you to lose any Extensions, Open websites, and some Preferences.
To Reset Firefox do the following:
Go to Firefox > Help > Troubleshooting Information.
Click the "Reset Firefox" button.
Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
Firefox will open with all factory defaults applied.
hi, i recently downloaded a site called ARCADE SAFARI GAMES and since I downloaded it the DATASRVRS popup appeared and I removed the games website and I no longer (fingers crossed) have the DATASRVRS popping up,take a look at what is in your downloaded documents especially any free downloads and also see what was downloaded when the popup appeared and hopefully you will get rid of it cheers Nige