Mouse/touchpad buttons only work for left button. There is nothing in the options list that requires usage of the alternate button; as such we sould be able to select options using *either* button.
This is specially felt if you have your desktop environment configured for left-handed usage -- and when you are trying to use the login options, your (automatic) mouse click does nothing.
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: lightdm 1.4.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
Uname: Linux 3.5.0-18-generic x86_64
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
CheckboxSubmission: c8a7d84e13c3b258e707f056604eb0e0
CheckboxSystem: d00f84de8a555815fa1c4660280da308
Date: Sun Oct 28 23:02:09 2012
InstallationDate: Installed on 2012-10-21 (7 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
Status changed to 'Confirmed' because the bug affects multiple users.