[Charlug] Memory card reader stopped working

[Pierre Abbat]

I have a memory card reader plugged into the USB port. I took some pictures 
today and I'm trying to download them. The last time I tried was before 
upgrading. What used to happen was that I stick the card in the reader and 
a /dev/sda1 appears. Then I run a script which mounts it, reads the pictures, 
and unmounts it. Now I stick the card in the reader and nothing happens. I 
tried "modprobe usb_storage", but no sda1 appeared. How do I fix it?

Pierre