If you put a swf file as an asset on a page and then try and play that swf it won't play in firefox (other browsers IE, Opera, Safari are ok).
The precise symptoms are
- The SWF looks like it loads - but you just get the background colour and the main movie doesn't play
- If you right click on it you will get the flashright click menu
- If you right click and choose play it does play
If you move the movie to an near identical path (e.g. bsset/xxxxx/xxx.swf) it will play fine.
Looking in wireshark the only difference is tapestry GZIP's the swf served as an asset this then stops firefox playing the movie.
If you turn GZIP off in tapestry the SWF plays again.
Ideally tapestry should let you turn gzip on/off by mime type as well as globally. This would let you enable it for HTML, JS but not for binary objects where it is just a waste of CPU time.