I have Shockwave Flash 22.0 r0 on Firefox 47.0.1, using a Mac with OX 10.11.5.
Downloading with Ant, sometimes as the download begins it hangs, and the only way out is to force quit Firefox. I have now disabled Flash, and when a download asks Flash to be activated, it freezes the moment I activate Flash.
Is there an alternative to Flash?
No this does not help. I have it downloaded, updated, everything, but it still crashes Firefox.
I have same issue when stream video e.g. Olympics on NBC. Then all open Firefox windows freeze too. Also happens in Chrome though less frequently.
Windows 7 on Dell workstation.