I've found Firefox has one of the best popup killers around, perhaps a little too good in fact. Since the 1.5 release, getURL statements that launch a page in a new window from Flash are also blocked.

This was bound to happen when evil spammers turn to Flash as a refuge for their popup launching activities, the problem with that however is that settings manager for some of the advanced Flash Player settings is also triggered using getURL.


Unsuspecting users could encounter this problem when they get presented with a Privacy popup question in the Flash Player and click the advanced button.

Manish Jethani also has a more detailed post about this issue from a Flex perspective

CategoriesFlash, Flex