I am also seeing this bug on a fresh install of 12.04. Mouse is fine, tested on 2 other machines with 12.04. The only way I can get it back is to remove/re-add the Logitech Unifying receiver into USB slot.
JFeole
I am also seeing this bug on a fresh install of 12.04. Mouse is fine, tested on 2 other machines with 12.04. The only way I can get it back is to remove/re-add the Logitech Unifying receiver into USB slot.
JFeole