I also have an external Alcor card reader.  It has the exact same vendor
and device IDs as the internal reader, yet it works, while the internal
reader does not.  Furthermore, the usb-storage module is only loaded
when the reader is plugged in; if the reader is already plugged in
during boot, then usb-storage is not loaded.  My understanding is that
the usb-storage problem is not specific to the Alcor card reader.

If I manually load the usb-storage module or cause it to be loaded by
connecting the external reader, then if I insert a card into the
internal Alcor reader and attempt to do something with it (like fdisk -l
/dev/sdc), then I get this:

[  499.916536] usb 2-3: reset high speed USB device using ehci_hcd and address 2
[  510.160550] usb 2-3: reset high speed USB device using ehci_hcd and address 2
[  526.404534] usb 2-3: reset high speed USB device using ehci_hcd and address 2
[  526.652527] usb 2-3: reset high speed USB device using ehci_hcd and address 2
[  536.896534] usb 2-3: reset high speed USB device using ehci_hcd and address 2
[  537.035296] sd 8:0:0:0: Device offlined - not ready after error recovery

Again, the external reader works perfectly.  I only have this problem
with the internal reader.

-- 
kernel 2.6.28 from 2.6.27 prevents Alcor reader working
https://bugs.launchpad.net/bugs/372232
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