It’s now 11:12am, and I just walked back to my desk to check something. It now appears that DC #2 as well as all our PCs on the network are now 1/2 hour off… the other way!

I’m going to add the syncing program to DC #2 and see if that doesn’t resolve the issue.

This is too weird.

Update: After installing TimeSync on the second DC, things seem to be back on track at least for now. Hopefully they will stay that way.

Another Update:  I actually watched DC #1 fall out of sync by 2 hours a little later in the afternoon.  Not knowing what else to do, I went ahead and rebooted both DCs simultaneously.  It’s been about 24 hours now and I haven’t seen any clock skews as of yet.  Isolated incident?  We’ll see…