Isn't there a setting in IE to only accept cookies from the originating domain? I know FF and Safari have that as well... I believe the privacy part is to protect YOU from spammers like um, people I've heard of, that would use a dynamically created iFrame to install trackers...
Yeah definately, the issue in this case though is that as I'm deadling with an iframe, technically the cookies are 1st party, and set and read by the originating domain (or so I believe), but IE still considers it to be "3rd party" content just because its in an iframe.
I've had the same issue and getting your P3P headers correct will fix it.
Thanks cdc - I'd hoped this would be the case. Seems really stupid though considering it doesn't seem that hard to set the correct P3P header - although you're agreeing to legal T&Cs from a technical perspective you can just use a generic privacy header and apparently it works.
DM