[eluser]Derek Allard[/eluser]
mrbinky3000, I'm interested in working with you to permanently resolve any issue of IE rejecting CI's session cookies. I've personally (nor any member of the EllisLab development team) been able to recreate this, but if you search "ie underscore cookie" you'll see dozens (hundreds) of sites claiming that if the
hostname contains underscores then the cookie might be rejected. I'm not sure how this can impact CI per se, but I'd like to dig into it. Do you have a public facing site that I could see that exhibits this behaviour?