Quote o' the day: IE vs. cookies
Posted on July 27, 2012 by Tommy McGuireFrom EricLaw's IEInternals:
It’s worth mentioning that increased cookie limit actually broke the website of a major financial institution. The site depended on cookies beyond the 20 cookie limit getting dropped, and stopped working properly when the limit was increased. This is just one example of how tightly-coupled today’s web is to IE’s cookie implementation. That, in turn, is one reason why the IE team must exercise great care when making any change to IE’s cookie implementation.
Great care, indeed. Eric also writes, "Over the five years I’ve worked on Internet Explorer, I’ve probably seen more questions from the community about HTTP cookies than on any other topic."
Which might mean something.