Sorry about the lack of info. HP pavillion a250n, running Windows XP, monitor is MAG, graphics card is Invidia GeForce 4MX 440 with AGP 8x, Norton anti-virus, Spy-bot. All worked fine until I downloaded Mozilla 1.5 but problem happens with either Mozilla or IE. I have tried System Restore and have re-installed Nvidia, but problem persists. Another example: The map is invisible on mapquest, though the rest of the page is fine. Cursor changes from pointer to hand as it passes over map area, but you can't see anything. Thanks in advance for any suggestions.