By default IE6 denies ALL cookies.
You have to go into the internet options & edit your security settings to allow all cookies by default.
Both IE6 and NS6 will be adhering to the new p3p policy (
http://www.p3p.org ) which requires that each server include a full privacy policy in it's cookie headers to ensure that you don't get tracked in a way that isn't anonymous.
Overall the idea is good but I have yetto see any documentation on p3p that is anything but confusing...
<spam>
That's why we at ConversionCash stopped using cookies to track signups last week :-)
</spam>
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$35 PLUS 50% AND $1.10/Minute