flashcard reader problem

[Michael Klinosky <mpk2 enter net>]

I use an external USB reader to transfer pix from my digital camera's
CompactFlash card. When I plug it and put the card in, I get TWO icons
and TWO instances of gThumb (which is configed in Preferences/Removable
Drive and Media).

Some linux people have helped me determine that the system actually sees
2 devices, and is responding accordingly.

Here is /proc/bus/usb/devices regarding this device:

< T:  Bus=02 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  3 Spd=12  MxCh= 0
< D:  Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
< P:  Vendor=05dc ProdID=0001 Rev= 0.01
< S:  Manufacturer=Lexar Media
< S:  Product=CF READER   ?
< S:  SerialNumber=
< C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=100mA
< I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=06 Prot=50 Driver=usb-storage
< E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
< E:  Ad=03(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms

The Mfgr. and Product are correct.

At least 1 person believes that it's a udev rules issue, but couldn't 
design a solution. Perhaps someone has a solution?