I'm experiencing the exact same problems on Ubuntu 11.04. After a reboot the mouse works fine on the gdm login screen. When I login the mouse works until I star a program. After that the left mouse button stops working. I have to do a service gdm restart and log back in to get it working again. After the gdm restart it all works fine. I can reproduce this easily as this happens on every reboot.
The machine I'm running it on is an HP 6820s laptop.
I'm experiencing the exact same problems on Ubuntu 11.04. After a reboot the mouse works fine on the gdm login screen. When I login the mouse works until I star a program. After that the left mouse button stops working. I have to do a service gdm restart and log back in to get it working again. After the gdm restart it all works fine. I can reproduce this easily as this happens on every reboot.
The machine I'm running it on is an HP 6820s laptop.