I'm using synclient on-the-fly configuration right now but is unhappy of its inconsistency of disabling touchpad whenever I'm typing, so I thought switching to Gnome's settings but "enable mouse clicks on touchpad" doesn't work because I cannot tap or scroll but pressing CTRL to locate my cursor's positions works fine.

Not sure if it's a bug; doesn't anyone have this similar situation?

OS: Debian Wheezy (Gnome Shell)
Hardware: Synaptic Touchpad