Pinpad on SPR532 isn't used

[Felix E. Klee]

After installing GNUPG 1.4.2, I can now access my OpenPGP smartcards
(bought at Kernelconepts) using my SPR532 reader.  However, the pinpad
of the reader is not used.  An example:

  ~> gpg --card-edit
  gpg: WARNING: using insecure memory!
  gpg: please see http://www.gnupg.org/faq.html for more information
  
  Application ID ...: D2760001240101010001000005B60000
  Version ..........: 1.1
  Manufacturer .....: PPC Card Systems
  Serial number ....: 000005B6
  Name of cardholder: [not set]
  Language prefs ...: de
  Sex ..............: unspecified
  URL of public key : [not set]
  Login data .......: [not set]
  Private DO 1 .....: [not set]
  Private DO 2 .....: [not set]
  Signature PIN ....: forced
  Max. PIN lengths .: 254 254 254
  PIN retry counter : 3 3 3
  Signature counter : 0
  Signature key ....: [none]
  Encryption key....: [none]
  Authentication key: [none]
  General key info..: [none]
  
  Command> passwd
  gpg: OpenPGP card no. D2760001240101010001000005B60000 detected
  
  PIN
  Enter PIN: [Here I have to enter my PIN via my computer's keyboard]

The version of the reader's firmware is 5.05 IIRC.  

What may be the reason for the problem?

-- 
Felix E. Klee