It's good to know another 722 software release is out there...last week when my 722 updated to L677, I experienced serious (over 30 seconds) lag in skipping and restoring timers, and then it went away after the update was applied. Yesterday, I started getting those lags again, so I hope the reason for my lags again is my unit is in the process of applying L721. I'll check it when I get home.