Has mark and paste died?

[sean darcy]

On Fedora 18, xorg-x11-server-Xorg-1.13.2-1.fc18.x86_64, xfce-4.10.0. 
synaptics touchpad driver.

I can't get paint and paste to work. That is, I can't mark some text, 
and then double click to paste it. At first, I thought the synaptics 
driver wasn't generating a middle button event when I double clicked.

But I ran xev, and it does generate a middle button (button 2) event.

I ran xev. Clicked once with the left button, once with the right 
button, once with both:

ButtonPress event, serial 32, synthetic NO, window 0x4400001,
     root 0xad, subw 0x0, time 91740290, (94,61), root:(645,373),
     state 0x0, button 1, same_screen YES

ButtonRelease event, serial 32, synthetic NO, window 0x4400001,
     root 0xad, subw 0x0, time 91740387, (94,61), root:(645,373),
     state 0x100, button 1, same_screen YES

ButtonPress event, serial 32, synthetic NO, window 0x4400001,
     root 0xad, subw 0x0, time 91748022, (94,61), root:(645,373),
     state 0x0, button 3, same_screen YES

ButtonRelease event, serial 32, synthetic NO, window 0x4400001,
     root 0xad, subw 0x0, time 91748068, (94,61), root:(645,373),
     state 0x400, button 3, same_screen YES

ButtonPress event, serial 32, synthetic NO, window 0x4400001,
     root 0xad, subw 0x0, time 91754379, (94,61), root:(645,373),
     state 0x0, button 2, same_screen YES

ButtonRelease event, serial 32, synthetic NO, window 0x4400001,
     root 0xad, subw 0x0, time 91754555, (94,61), root:(645,373),
     state 0x200, button 2, same_screen YES

you can see the synaptics driver is sending "button 2" events for a 
double click.

Yet a double click acts just like a right click(button 3), bringing up a 
properties dialog.

Has X behavior changed? Could something else be grabbing the button events?

sean