X1b strange latency issue - Fixed for now

Here's a new one for me.  Something has changed in my setup somehow.  I use to be able to record with such low latency that I could use post effects on my microphone without a problem.  Today, I setup a mic for an acoustic guitar and the throughput latency sounded normal.  As soon as I hit play, I suddenly get a very noticeable delay in the live audio.  I can stop, go to setup and simply click apply without changing any parameters and once again, the live audio comes through without noticeable delay until I hit play.  Then it is delayed once again!

I cleaned out my Picture Cache and tried adjusting my record and playback buffers from 1024 to 512 and back without fixing the issue.
I rebooted also.  At this point, I am going to try a system restore to see if a Windows 7 update
changed something.  I may have to reinstall the ASIO drivers. 

Anyone have this problem? 

Rimshot


Update: I rebooted and did not have to reinstall anything.  Symptoms went away!