Yes, this happens to me too but only under certain circumstances.
It happens all the time if I have an external keyboard plugged in and try to use the built-in keyboard or trackpad. It will often be non-responsive to input for about 5 seconds. Once both the keyboard and trackpad completely stopped working and I had to reboot (using the attached external keyboard). I noticed some USB errors in console once when this happened but didn't investigate.
I've also seen this when it's asleep and I try to wake it up. Often it will take 5 sec or more to respond and wake up.
It happens all the time if I have an external keyboard plugged in and try to use the built-in keyboard or trackpad. It will often be non-responsive to input for about 5 seconds. Once both the keyboard and trackpad completely stopped working and I had to reboot (using the attached external keyboard). I noticed some USB errors in console once when this happened but didn't investigate.
I've also seen this when it's asleep and I try to wake it up. Often it will take 5 sec or more to respond and wake up.