Odd mouse behaviour in Games

[kaempfer]

i've got a problem in nearly all games (sdl and glx): my mouse is uncontrollable, it always gets pulled down to right lower corner of the window every few millisecs.
It happens in fullscreen as well as windowed mode under gnome and xterm-only X-sessions. i tryed playing with xorg.conf /mousedrivers (evdev, mouse) and screen settings, but i always get these odd results.
I'm using Hardy 64-bit with nvidia drivers.
Examples of games where it happens: postal2, nexuiz (fixable via deactivating "Turn off OS mouse acceleration"), warsow and I guess much more.

Any help on this?

P.S.: My system setup is a relatively clean one, did a fresh install of hardy when it was released.
I tried removing the twin view settings, but it did not help.

My Xorg.conf:

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 1.0  (buildmeister@builder62)  Wed Apr  2 08:22:51 PST 2008

# xorg.conf (X.Org X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
#   sudo dpkg-reconfigure -phigh xserver-xorg

Section "ServerLayout"
    Identifier     "Default Layout"
    Screen      0  "Screen0" 0 0
EndSection

Section "Module"
    Load           "glx"
EndSection

Section "ServerFlags"

# Removed Option "Xinerama" "0"
# Removed Option "Xinerama" "1"
    Option         "Xinerama" "0"
Option "AllowDeactivateGrabs" "on"

EndSection

Section "InputDevice"
    Identifier     "Generic Keyboard"
    Driver         "kbd"
    Option         "XkbRules" "xorg"
    Option         "XkbModel" "pc105"
    Option         "XkbLayout" "de"
    Option         "XkbOptions" "lv3:ralt_switch"
EndSection

Section "InputDevice"
    Identifier     "Configured Mouse"
    Driver         "evdev"
    Option         "Device" "/dev/input/by-id/usb-Logitech_USB-PS.2_Optical_Mouse-event-mouse"
    Option         "CorePointer"
EndSection

Section "Monitor"
    Identifier     "Configured Monitor"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Panasonic"
    HorizSync       30.0 - 61.0
    VertRefresh     50.0 - 77.0
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "Maxdata (RogenTech) B_101920"
    HorizSync       30.0 - 84.0
    VertRefresh     56.0 - 75.0
EndSection

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

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 7600 GS"
EndSection

Section "Device"
    Identifier     "Videocard1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 7600 GS"
    BusID          "PCI:1:0:0"
    Screen          1
EndSection

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

Section "Screen"

# Removed Option "TwinView" "1"
# Removed Option "metamodes" "CRT: nvidia-auto-select +1280+0, DFP: 1280x1024_60 +0+0"
    Identifier     "Screen1"
    Device         "Videocard1"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinViewXineramaInfoOrder" "DFP-0"
    Option         "TwinView" "0"
    Option         "metamodes" "CRT: nvidia-auto-select +0+0"
EndSection

Section "Screen"
# Removed Option "TwinView" "0"
# Removed Option "metamodes" "DFP: 1280x1024_60 +0+0"
    Identifier     "Screen0"
    Device         "Videocard0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "1"
    Option         "TwinViewXineramaInfoOrder" "DFP-0"
    Option         "metamodes" "CRT: nvidia-auto-select +1280+0, DFP: 1280x1024_60 +0+0"
EndSection