Logitech Marble Mouse On Ubuntu 9.04

[I have a feeling this no longer works in 9.10, but I'm not sure yet]

Upgrading to Ubuntu Jaunty Jackalope (9.04) disabled the scrollwheel effect on my Logitech Marble Mouse USB, so I set out to find a cure. Here it is. Add the following file, "/etc/hal/fdi/policy/mouse-wheel.fdi" (perhaps any title would do... I picked that one at random) consisting of the following text, then reboot. Of course, the formatting is hideous below, and all the line feeds need to be removed, but I can't figure out how to show this code snippet without formatting except in a textarea! (damn)

<br /> <deviceinfo version="0.2"><br /> <device><br /> <match key="info.product" string="Logitech USB Trackball"><br /> <merge key="input.x11_options.Buttons" type="string">5</merge><br /> <merge key="input.x11_options.ButtonMapping" type="string">1 8 3 4 5 6 7 2 9</merge><br /> <merge key="input.x11_options.EmulateWheel" type="string">true</merge><br /> <merge key="input.x11_options.EmulateWheelButton" type="string">8</merge><br /> <merge key="input.x11_options.EmulateWheelTimeout" type="string">300</merge><br /> <merge key="input.x11_options.XAxisMapping" type="string">6 7</merge><br /> <merge key="input.x11_options.YAxisMapping" type="string">4 5</merge><br /> <merge key="input.x11_options.ZAxisMapping" type="string">4 5</merge><br /> <merge key="input.x11_options.Emulate3Buttons" type="string">true</merge><br /> </match><br /> </device><br /> </deviceinfo><br />