Touch recently broken?

I have 2 touch devices on 2 different machines-

One is an HP Compaq L2105tm 21" touch lcd. Been working fine until 1-2 days ago. Now touch pretty much stops working randomly.

The other is an ASUS EP121. Been a little flaky on touch, but worked most of the time... until 1-2 days ago. Same behavior now as the HP monitor.

Anyone else seeing this?

I haven't had this problem. If you have automatic updates on you could try uninstalling the updates from those two days to see if the problem resolves.
Alternatively, was there any software you installed on both machines during that time period?