As of a day ago if you update to Firefox 31 then I and others report losing Norton Safe Site icons. If you are a Norton user I wouldn't update until the issue is resolved.
If anyone knows the problem has been fixed I'll tick the problem resolved.
My Computer
At a glance
Windows 7x64 Home Premium SP1Intel i7 2600kG.Skill Ripjaws (DDR3-1600) 2x4GBNvidia GeForce GTS 450; Intel HD Graphics 300...
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Own build
OS
Windows 7x64 Home Premium SP1
CPU
Intel i7 2600k
Motherboard
ASUS P8Z68 Deluxe
Memory
G.Skill Ripjaws (DDR3-1600) 2x4GB
Graphics Card(s)
Nvidia GeForce GTS 450; Intel HD Graphics 3000(GT2+)
I did a very recent system image restore which had V 30 and the safe site icons returned. I accidentally had auto update on - now it's on let me decide. Firefox keeps nagging me to update. I really should give Chrome a go.
My Computer
At a glance
Windows 7x64 Home Premium SP1Intel i7 2600kG.Skill Ripjaws (DDR3-1600) 2x4GBNvidia GeForce GTS 450; Intel HD Graphics 300...
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Own build
OS
Windows 7x64 Home Premium SP1
CPU
Intel i7 2600k
Motherboard
ASUS P8Z68 Deluxe
Memory
G.Skill Ripjaws (DDR3-1600) 2x4GB
Graphics Card(s)
Nvidia GeForce GTS 450; Intel HD Graphics 3000(GT2+)