Ok, this is indeed Slow keys. The problem is caused by holding SHIFT button for N seconds. It can be turned off by holding SHIFT again for N seconds (not a permanent fix). Unfortunately it seems that under Gnome 3, there is no gui to configure this accessibility feature correctly.
Ok, this is indeed Slow keys. The problem is caused by holding SHIFT button for N seconds. It can be turned off by holding SHIFT again for N seconds (not a permanent fix). Unfortunately it seems that under Gnome 3, there is no gui to configure this accessibility feature correctly.