USB-Keyboard acts crazy, while LaptopKeyboard remains normally

[adieb]

Very Strange:
I am using Ubuntu 8.10 on my FSC Lifebook E with NVidia Card (and proprietary driver) in a DockingStation since a while without encountering any problems:

Two days ago, the usb-keyboard connected to the docking station didn´t capture all pressed keys anymore, and sometimes it repeated a once pressed key a 100 times.

I thought the keyboard was broken, and switched to anotherone. Same thing...

After rebooting the issue seemed to be away. But suddenly, it came back.

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Description: Ubuntu 8.10 64-Bit
Release: 8.10

lsusb
Bus 007 Device 006: ID 0bf8:1004 Fujitsu Siemens Computers
Bus 007 Device 003: ID 0461:4d16 Primax Electronics, Ltd
Bus 007 Device 002: ID 0409:005a NEC Corp. HighSpeed Hub
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 003: ID 046d:09b2 Logitech, Inc.
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 08ff:2580 AuthenTec, Inc. AES2501 Fingerprint Sensor
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

xorg:
Section "ServerLayout"
    Identifier "Layout0"
    Screen 0 "Screen0" 0 0
EndSection

Section "Module"
    Load "glx"
EndSection

Section "ServerFlags"
    Option "Xinerama" "0"
EndSection

Section "Monitor"
    Identifier "Configured Monitor"
EndSection

Section "Monitor"
    Identifier "Monitor0"
    VendorName "Unknown"
    ModelName "FUS B19-3"
    HorizSync 30.0 - 83.0
    VertRefresh 55.0 - 76.0
EndSection

Section "Device"
    Identifier "Configured Video Device"
    Driver "nvidia"
    Option "NoLogo" "True"
EndSection

Section "Device"
    Identifier "Device0"
    Driver "nvidia"
    VendorName "NVIDIA Corporation"
    BoardName "GeForce 8400M G"
EndSection

Section "Screen"
    Identifier "Default Screen"
    Device "Configured Video Device"
    Monitor "Configured Monitor"
    DefaultDepth 24
EndSection

Section "Screen"
    Identifier "Screen0"
    Device "Device0"
    Monitor "Monitor0"
    DefaultDepth 24
    Option "TwinView" "1"
    Option "metamodes" "CRT: nvidia-auto-select +0+0, DFP-1: 1280x1024 +1280+0"
    SubSection "Display"
        Depth 24
    EndSubSection
EndSection

[adieb (adieb)]

What seems to help:
Switch to console (alt-strg-f1). There the problem doesn´t exist, so i think it ist xorg related.
After switching back to Xorg (strg-alt-f7) the problem is away... (since now, 20min...)