scroll wheel works for some applications and not others

i just upgraded to the new ubuntu 8.04 from 7.10 (did a fresh install) but now scrolling is broken. Only a few applications can actually scroll properly (envy is the only one that i remember being able to scroll), most cannot scroll such as firefox, nautilus, etc. Any ideas how to make scrolling work again?

this is the relevant part of my xorg.conf file

Code:

Section "InputDevice"
        Identifier      "Configured Mouse"
        Driver          "mouse"
        Option          "CorePointer"
EndSection

Section "InputDevice"
        Identifier      "Synaptics Touchpad"
        Driver          "synaptics"
        Option          "SendCoreEvents"        "true"
        Option          "Device"        "/dev/psaux"
        Option          "Protocol"      "auto-dev"
        Option          "HorizEdgeScroll"       "0"
EndSection

 

alright, i got the scroll wheel working but there is another problem...

while in firefox if i spin the scroll wheel quickly, firefox cannot keep up so it keeps scrolling long after i have stopped the wheel. That is probably a bit confusing, so ill use an example. Lets say firefox can scroll at 2 pages/second, but i spun the scroll wheel at 4 pages/second. If i stop the scroll wheel at the two page mark (after 1 second), it continues to scroll the remaining 2 pages. This is quite hard to explain, but i hope you can understand