I did deactivate the flash uploader from ACP:
Application/Attachments/Attachments Options/"Use Flash Uploader" (unchecked)
But Firefox is still anoying me by keeping asking if Flash should be allowed or blocked. This seems to occur exactly any time I enter a thread. I get same result on both my own 1.5.5 forum and the 3-day xenForo demo.
Has anyone been lucky with this?
btw: I don't know if the Flash uploader actually is active or not. Don't know how to tell
The only thing that's Flash is the uploader and that overlay is not using it. Flash would have to be triggered by something else then. You might need to look at the network part of the browser console/developer tools to see if it's loading a .swf file somewhere.
Are you just saying that's printed in the console? If so, that's just a developer note; it doesn't mean it's actually being loaded. I was referring to viewing the network tab from the developer tools to see if you can see a swf file being loaded.
I had the same problem today, and the same situation (flash doesn't
actually load anymore after turning it off, but FF warns about it).
Maybe this should get a bug report for Firefox instead of Xenforo...