User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:42.0) Gecko/20100101 Firefox/42.0 Build ID: 20151029151421 Steps to reproduce: This occurs during normal usage. Actual results: On Windows XP SP3 32 bit, running current Firefox (and last several versions), I found the following: - any time the cache was full, I would begin to see non-loading images; then no new images would load at all - clearing the cache by itself didn't resolve it - manually adjusting the cache size didn't resolve it - clearing the cache and restarting FF didn't resolve it - clearing the cache ONLY worked to solve the problem if you restarted the computer completely I did a "Refresh Firefox" to the current version and it didn't help. Expected results: I expected clearing the cache to have some result without having to restart the computer.
Animated GIFs, in particular, were never removed from the cache. That should be resolved in bug 1130968 - bug 686905. We should retest at that point.
This should be fixed now that bug 686905 landed.