Hello, Just installed this month's Windows Update patches on an old/slow Windows XP laptop (1.5GHz Pentium-M) and it appears to have damaged Windows 'ntpd' time-keeping.
Has anyone else observed this? Before the patch 'ntpd' frequency was -15.761 PPM. After the patches 'ntpd' frequency went to -500 PPM and the system was still gaining time so fast that 'ntpd' reset the time between -1.5 and -5 seconds every fifteen minutes. This went on for 12 hours after the system was rebooted. No change in the running applications and very light load most of the time. Restarted 'ntpd' with the same -g parameter and the problem persisted. Restarted 'ntpd' with the -M option added and it looks like it's doing ok now at around -55 PPM, but -M has its down-sides so I prefer to avoid using it if possible. Running a somewhat older version 4.2.4p4 against two local CDMA time servers. Generally get offsets under 100 microseconds. The version running here is patched to allow a one-second polling interval, which I've found necessary to obtain decent time-keeping with Windows. My best guess is that the problem results from kernel-mode 'Win32k.sys' driver patch KB2829361 aka MS13-046 http://support.microsoft.com/default.aspx?kbid=2829361 Installed three other patches at the same time but two are for IE and one is for Active-X and don't seem likely culprits. In case someone suspects otherwise, they are KB2847204, KB2829530, KB2820197. The other May patches were installed three days ago since rebooting was not required for them. Any thoughts or comments are appreciated. Thanks _______________________________________________ questions mailing list questions@lists.ntp.org http://lists.ntp.org/listinfo/questions
