Hello, As I mentioned in the 'Question' section, this is what is happening on my Firefox ver. 3.6.12 I use several tabs on my 3.6.12 version of Firefox... In the last few months, the websites that I have tabbed work flawlessly for a few days to a week and then all of a sudden, some of the websites have incorrect formatting issues... and some links on the affected sites are inoperable. This will go on for a few days and then it will revert back to the correct page format... The sites that have the issues are: Canoe.ca, Facebook, Ebay and Kijiji... I have screen shots of the correct and incorrect formats for Canoe.ca. I have included links to my pics. The first pic is the 'incorrect' format and the second is the 'correct' format. You will notice in the URL box, that both pics are from the identical page... [http://farm5.static.flickr.com/4008/5144645098_65afec12e7_b.jpg] [http://farm5.static.flickr.com/4126/5144642824_a5ba39d11d_b.jpg] Does anyone have any idea as to what is going on? Has this happened to anyone else? Does anyone know how to fix this... It is VERY frustrating when I cannot view/use certain websites... TIA... John - Brampton, Ontario Canada - bambu@rogers.com