If your adsense ads were viewable on your page ok when viewing with IE, but not at all in FF, what would be the first thing you would look at?
I would look at the source code using your browser and see what is being downloaded from Google.
Thanks John, the source code coming from Google looks all ok. Any other ideas?
Can you supply a site link and I will try it on my computer?
Aaaah, just realised what the problem was, I had adblock installed as an add-on with FF - hasn’t everyone?
lol
Yes it happens to the best of us and takes a brave man to admit his mistake.
I don’t mind admitting mistakes John, I don’t have an ego to worry about 
(unlike a few on here!!
)
Hahaha
That was my first guess when I read the headline 
Nice one
Just a thought, but isn’t adblock on by default in FF?
No, AdBlock is an Ad-on you need to install.
After that it is on by default.
The day AdBlock is delivered with FF directly is the day the “Free information age” is going to die.
Because most people forget that advertising is paying all the free information and services out there and if there is no more money to be made with advertising then people will switched to payed content.
I will check my Javascripts were enabled or not?
I will first check whether my javascripts are enabled or not.