I had noticed that NS Browser was allowing what I call "popafters", i.e. something like a popup, but after closing NS Browser. I did not make much out of this, but I decided to spend some time on this, because the popafters were coming up with nauseating regularity. I spent well over one hour doing nothing but making changes in the options, closing NS Browser, and then opening it again. It started with Error Guard, and then with a page with no content, showing ar.atwola.com redirect and the end "casalemedia.com".
I found out that casalemedia is an outfit from Toronto, ca. I had set to block, permanently, cookies ar.atwola.com, atwola.com, c.casalemedia.com and casalemedia.com. The thing has not stopped coming up.
The behavior is similar to that noticed with FF1.0 preview release, I think.
In case someone else has noticed anything like this, please comment.
I am, just about, done, testing this beast.
UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.5) Gecko/20050101 Firefox/0.6.4