Different browser different ads ?

I noticed a few days ago that if an adsense web site with internet explorer it gives me a certain types of ads, health related - on topic for the web site.

But when I open that site via FF it would deliver off topic ads, it was showing me ads about blogging.

I refreshed both of them a few times and got the same results.

IE = on topic ads
FF = off topic ads

I`m not saying its some kind of trick google is trying to pull, but I thought it was really strange.

Anyone else see this ?

edit : I`m getting the same thing when I compare opera vs firefox.

Opera = on topic ads
FF = off topic blog ads

 

This is a fact, but there is no official explanation. Maybe it is different cookies, maybe FF ads are differently targeted.. Several topics about that:

http://www.webmasterworld.com/forum89/3903.htm

http://groups.google.com/group/adse...a19213637d7/ebb26dc31c8b701c#ebb26dc31c8b701c

 

Maybe it beacause your keywords?

 

well i guess if you manage your keywords that will do.it happens as there is no content related to your keywords or sth.

 

True. Will keyword targeting, more of the ad. will be nearly related to your site, but some time may have few totally un-relevant to your keywords.