Has anybody noticed that double-clicking on a DMG file no longer raises the mounted image to the front of all windows? It used to be that when you double-clicked a dmg file, it would pop-up but now you have to click Finder and click on the mounted image.
Is this a bug, by design or a setting that I can change?
Update: As per Daniel Beck's suggestion, I created a new account and downloaded the most recent version of Firefox via Safari. It still exhibited the same behavior. However, I noticed that if I double-click thew DMG from within the Downloads folder in Finder, it does pop up. But when I double-click the DMG within Safari (and Firefox also) it does not pop up over all other windows.

.dmgfile or just specific ones? I tried with the Path Finder and Google Chrome images: They all opened new windows. – Daniel Beck Jan 1 at 10:49Cmd-Tabto Finder though, different from what you describe. – Daniel Beck Jan 8 at 9:10