Jed - I agree we need to know, but you can never be certain. The fact that I don't have automatic Midi play, usually have javascript off and don't see any warnings gives me hope.

That was me above - I can't get used to having to log on each day. I'm copying my Firefox profile to other computers, and I found that more than half the file size was the cache, so I've set Iceweasel to clear the cache on shutdown until I've got the transfer working.

Phil