Grainy pictures on the net?

[Whosthedaddy]

Have just noticed over the last few days that the quality of pictures on my internet connection is pants, almost a scanned and then uploaded quality. Even the avatars on here are the same?

If I hold the mouse over the picture the message 'CTRL+R to improve image and SHIFT +PF5 to reload whole page' Neither seem to work when pressed?

On another matter, Firefox seemed to be a little wierd? In the google search engine I would type what I wanted, the results would be shown but when the links clicked nothing except 'no results found' would appear on a blank screen. The web address seemed to be using a 3rd party when loading a page. I have now subsequently removed Firefox for now.

Any ideas?
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[Jamrock]

Running NoScript by any chance? If you are uninstall it as lots of people are having problems with it and the new version of firefox.