HP Pavilion Cardreader on 10.6.4

Hi,

I just noticed that after all my integrated card reader does not show any inserted card. I have tried several... I applied IOUSBFamily-378.4.3 kext, my system profiler shows
USB2.0-CRW:

Product ID: 0x0151
Vendor ID: 0x0bda (Realtek Semiconductor Corp.)
Version: 51.95
Serial Number: 20060413092100000
Speed: Up to 480 Mb/sec
Manufacturer: Generic
Location ID: 0xfd520000
Current Available (mA): 500
Current Required (mA): 500

but when I insert any card nothing happens. Any idea?

greetings ;)

grega