I've just upgraded to Saucy (this was working in Raring). I've tried rebooting.

Here's /etc/X11/xorg.conf:

Section "InputClass"
Identifier      "Touchpad"
Driver          "synaptics"
MatchIsTouchpad "on"
Option          "PressureMotionMinZ" "60"
Option      "MaxTapMove" "4"
Option      "PalmDetect" "1"
Option      "VertTwoFingerScroll" "1"
Option      "VertEdgeScroll" "0"
EndSection

And here's the output from synclient:

LeftEdge                = 100
RightEdge               = 2408
TopEdge                 = 71
BottomEdge              = 1249
FingerLow               = 1
FingerHigh              = 1
MaxTapTime              = 180
MaxTapMove              = 4
MaxDoubleTapTime        = 180
SingleTapTimeout        = 180
ClickTime               = 100
EmulateMidButtonTime    = 75
EmulateTwoFingerMinZ    = 282
EmulateTwoFingerMinW    = 7
VertScrollDelta         = 56
HorizScrollDelta        = 56
VertEdgeScroll          = 1
HorizEdgeScroll         = 1
CornerCoasting          = 0
VertTwoFingerScroll     = 0
HorizTwoFingerScroll    = 0
MinSpeed                = 1
MaxSpeed                = 1.75
AccelFactor             = 0.0705716
TouchpadOff             = 2
LockedDrags             = 0
LockedDragTimeout       = 5000
RTCornerButton          = 2
RBCornerButton          = 3
LTCornerButton          = 0
LBCornerButton          = 0
TapButton1              = 1
TapButton2              = 3
TapButton3              = 0
ClickFinger1            = 1
ClickFinger2            = 1
ClickFinger3            = 0
CircularScrolling       = 0
CircScrollDelta         = 0.1
CircScrollTrigger       = 0
PalmDetect              = 1
PalmMinWidth            = 10
PalmMinZ                = 200
CoastingSpeed           = 20
CoastingFriction        = 50
PressureMotionMinZ      = 60
PressureMotionMaxZ      = 160
PressureMotionMinFactor = 1
PressureMotionMaxFactor = 1
ResolutionDetect        = 1
GrabEventDevice         = 1
TapAndDragGesture       = 1
AreaLeftEdge            = 0
AreaRightEdge           = 0
AreaTopEdge             = 0
AreaBottomEdge          = 0
HorizHysteresis         = 14
VertHysteresis          = 14
ClickPad                = 0

Notice that PressureMotionMinZ, MaxTapMove and PalmDetect are as specified in xorg.conf, but VertEdgeScroll and VertTwoFingerScroll aren't. I can set them temporarily via synclient VertEdgeScroll=0 and synclient VertTwoFingerScroll=1, but these changes are lost when I reboot. What's the best way of fixing this?