Firefox 1.5 now has an update to 1.5.0.1. I’m not sure what happened to the in-product indicator, but it seems to have been replaced by a new dialog (see below). Maybe the in-product icon was too subtle and hard to notice, but this new dialog looks a lot like those pop-up ads that proclaim “Your PC may be infected! Click now!”. On the positive side, the update does have a link to learn more about the update, compatibility warning for extensions that might not work, and the opportunity to update later. To be most effective and not appear to be…