Hello, I have two domain for same wordpress installation.
My blog is reachable from http://www.staipa.it/blog and from http://www.stefanogiolo/blog
It is same wordpress installation.
I use “Cookie Notice” but I have a little problem. If i close notice from http://www.staipa.it it/blog work fine, if I close from http://www.stefanogiolo.it/blog it continue to reappear.
Probably it is a problem linked to cookie that you use. Maybe you get the url for cookies from Database instead of wordpress function or php refer, or something similar.
Can you check if can exists a solution?