It's an external reader and new, 4 days ago.
I've tried it in ALL the ports (6) to no avail.
Could it be that the Harddrive a PATA is being seen as a SATA (sda) interfere?
I don't believe it is related to your HDD, no.
There are lots of reports of this unit failing to work on different distros.
I have one in my present Dell desktop ..... from which I got the info posted ...... except it is internal.
I have just had a very weird experience with it ....... I plugged in another USB hub and checked with lsusb and all was well. When I unplugged the hub and tried lsusb again, bot the hub and the Alcor had disappeared!
Nevertheless inserting an MMC card (32MB only) into the device allowed me to view (FAT 16) and mount it.
Do you have a different card to the one you are presently trying to use?
Maybe a different type or one of much smaller size?
Has the card worked at all since you got it 4 days ago?
You are sure you are plugging the device into a USB 2 port?
In your position, taking cognisance of the multitude of problems reported, I would be inclined to return it for something similar from a different manufacturer ....... if that was at all possible.

Unless someone wants to send me a 1GB card I have no way to test whether it would work here or not.

You could try this just to be sure you have the drivers installed ....
lsmod | grep _hcdMy output is as follows
[root@Dell user]# lsmod | grep _hcd
uhci_hcd 16669 0
ohci_hcd 17412 0
ehci_hcd 27409 0
usbcore 121266 15 snd_usb_audio,snd_usb_lib,rt2500usb,rt73usb,rt2x00usb,usb_storage,em28xx_dvb,em28xx_alsa,em28xx,wacom,uhci_hcd,ohci_hcd,ehci_hcd,usbhidThe four drivers on the left are the important ones.
That is about all I can think of at the moment .....
regards.