With last update :
$ uname -a
Linux stef 2.6.35-22-generic #35-Ubuntu SMP Sat Oct 16 20:45:36 UTC 2010 x86_64 
GNU/Linux

I know have this errors in dmesg 
mmc0: ADMA error
mmc0: error -5 whilst initialising SD card

If I follow recommendations given in bug 605043 (removing adma) then sd card 
reader works fine
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/605043

specificaly by adding a new conf file in /etc/modprobe.d with this line  :
options sdhci debug_quirks=0x40

Then rmmod sdhci_pci and rmmod sdhci
and then modprobe sdhci

that makes the sd reader working immediately

** Attachment added: "disable adma in module sdhci_pci"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/660088/+attachment/1705497/+files/cardreader_patch_disable_adma.conf

-- 
Ricoh e822 SD-Card reader doesn't work
https://bugs.launchpad.net/bugs/660088
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