Hmmm I am getting the same thing. My card reader was working previously. I've had this issue before and it is with a kernel module that doesn't get loaded.
Did you keep a history of your Synaptic updates? Can you post a list of maybe your last couple of updates sessions or before you realized your card reader wasn't working anymore?
Sorry, Jonesy. I got mine working real quick. Unless you have a Sony VAIO, maybe my fix won't apply to you. But it was definitely a kernel module on my issue. I checked what was missing on /etc/modprobe.preload and spotted that the kernel module sony_laptop was not loaded. I modprobe sony_vaio and my card reader now works.