Out of curiosity I checked my FreeSWITCH logs and since April 6 there have been 66 occurrences of the Reverse Clock Skew Detected message and 22 of Forward Clock Skew Detected. 2014-07-31 11:24:21.023302 [CRIT] switch_time.c:1091 Reverse Clock Skew Detected! 2014-07-31 11:24:21.023302 [CRIT] switch_time.c:1104 If you see this message many times consider a nicer machine to run me on. I AM *FREE* after all. The machine is a 2.3GHz i7 Mac mini with 8GB RAM running 10.9.4 and is basically 95-99% idle. The only thing it's running is FreeSWITCH for home--two extensions and two DIDs. There's no pattern I can see when the skew messages occur. Usually once every 1-3 days, but infrequently it can be 2-3 times per day. Monotonic clock issue? Anything to do about it? FreeSWITCH Version 1.4.6+git~20140603T193516Z~9479729340~64bit (git 9479729 2014-06-03 19:35:16Z 64bit) Thanks, -Terry