In the last couple of days all embedded photos, including avatars, have stopped showing for me.   There is just a blank space in the standard BR background in anyone's post where I'm assuming the photo should be.

Attached photos still display as normal.

So what have I done to my computer?

there might be a spot in your profile to hide avatars??

You have 2 firewalls turned on. Turn off your Norton firewall.  

Thanks Glenn.