From Bugzilla Helper: User-Agent: Mozilla/5.0 (OS/2; U; Warp 4.5; en-US; rv:0.9.8) Gecko/20020204 BuildID: Save everyone headache :) stop all sort of (GIF) animation while the page isn't in the foreground. Reproducible: Always Steps to Reproduce: 1. Visit page with animation 2. Move focus to another tab or minimize browser 3. CPU usage remains high (due to animation)

->imagelib

Since this bug was reported, a newer version of Mozilla (1.0 RC1) has been released. Reporter, please can you check to see whether this bug is still present in a recent build (Moz1-RC1 or a new nightly build). If this bug does not occur please can you resolve the bugreport? BTW, Page works fine for me (Moz1.0 RC1 buiild id 2002041903)

It's too hard to tell with the newer versions; cpu usage is so low normally (3% or so) that there is no way for me to know if it's still running in the background. This issue is about a concept: you shouldn't care about animating images in the background. Isn't there a way to verify whether this is happening from the design docs or the code?

*** This bug has been marked as a duplicate of 120154 ***