Automount no longer working

[Phil]

Thank you for reading this.

I originally posted this to the Kubuntu list and since I haven't 
received a reply I'm posting here. I expect the fix will be relevant to 
both Ubuntu and Kububtu anyway. By the way I'm running version 13.04.

For some strange reason external USB devices are not longer being 
automounted.

Also for some strange reason the "Enable automatic mounting of removable 
media was unchecked plus all of the "Automount on attach" check boxes 
were also unchecked. I expected that ticking all of the boxes would fix 
the problem but instead Device Notification displays "Could not mount 
the following device" etc

The external USB devices show up under Dolphin and are also listed with 
lsusb but I.cannot run Lucky Backup because the backup drives aren't 
mounted. I've also installed "usbmount" although I've never had to 
install it in the past and I don't think it was necessary.

Can anyone offer any suggestions to fix this?

-- 
Regards,
Phil