User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0 Build Identifier: Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0 SOME of the time the animated gif image on the referenced web site does display but it rarely displays in spite of frequent refresh when the web page is first loaded. This problem NEVER occurred in the older version of the browser .. Reproducible: Sometimes Steps to Reproduce: 1.load page fresh 2.hit refresh 3. Actual Results: animated gif seems more likely to display after page has been loaded for some time and less likely to display when page is first loaded from scratch Expected Results: animated gif should idsplay anytime page is loaded

Works for me (red or blue car gets animated) with a new clean profile: Mozilla/5.0 (X11; Linux x86_64; rv:6.0a1) Gecko/20110419 Firefox/6.0a1 But I've played around a little bit with http://www.professormotor.com/v/vspfiles/templates/pm_tpl/images/HomePage/Home_Graphic_Welcome.gif If I view the gif as the link above it animates once. It does not get animated again if I press F5. But if I save the gif to my HDD and open it locally then it gets animated every time I press F5. If I shift-click reload then the animation starts over. I also tested with Chromium: Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.205 Safari/534.16 With Chromium it doesn't matter if I view the gif from the net or locally. Pressing F5 always restarts the animation. ----- Can you reproduce the bug when running in Safe Mode? https://support.mozilla.com/en-US/kb/Safe+Mode ...or with a new clean profile? https://support.mozilla.com/en-US/kb/Basic%20Troubleshooting#w_8-make-a-new-profile Which version do you mean with "the older version of the browser"? For reference also see this page: http://kb.mozillazine.org/Animated_images

(In reply to comment #1) > But I've played around a little bit with > http://www.professormotor.com/v/vspfiles/templates/pm_tpl/images/HomePage/Home_Graphic_Welcome.gif > > If I view the gif as the link above it animates once. It does not get animated > again if I press F5. > > But if I save the gif to my HDD and open it locally then it gets animated every > time I press F5. > > If I shift-click reload then the animation starts over. > > I also tested with Chromium: > Mozilla/5.0 (X11; U; Linux x86_64; en-US) AppleWebKit/534.16 (KHTML, like > Gecko) Chrome/10.0.648.205 Safari/534.16 > > With Chromium it doesn't matter if I view the gif from the net or locally. > Pressing F5 always restarts the animation. > This may be another bug. and it was reproduced since Firefox1.5.0.12 at least.