[CentOS] new errors in /var/log/messages since update to 5.9

Fri Jan 18 05:02:48 UTC 2013
fred smith <fredex at fcshome.stoneham.ma.us>

since updating to 5.9 a little while ago I find a load of these in
/var/log/messages, which I've not seen before:

Jan 17 22:17:18 fcshome ntpd[4680]: sendto(216.230.228.211) (fd=22): Invalid argument
Jan 17 22:17:20 fcshome ntpd[4680]: sendto(199.4.29.166) (fd=22): Invalid argument
Jan 17 22:17:31 fcshome ntpd[4680]: sendto(129.70.132.37) (fd=22): Invalid argument
Jan 17 22:34:22 fcshome ntpd[4680]: sendto(216.230.228.211) (fd=22): Invalid argument
Jan 17 22:34:23 fcshome ntpd[4680]: sendto(199.4.29.166) (fd=22): Invalid argument
Jan 17 22:34:37 fcshome ntpd[4680]: sendto(129.70.132.37) (fd=22): Invalid argument
Jan 17 22:51:26 fcshome ntpd[4680]: sendto(199.4.29.166) (fd=22): Invalid argument
Jan 17 22:51:28 fcshome ntpd[4680]: sendto(216.230.228.211) (fd=22): Invalid argument
Jan 17 22:51:41 fcshome ntpd[4680]: sendto(129.70.132.37) (fd=22): Invalid argument
Jan 17 23:08:32 fcshome ntpd[4680]: sendto(199.4.29.166) (fd=22): Invalid argument
Jan 17 23:08:33 fcshome ntpd[4680]: sendto(216.230.228.211) (fd=22): Invalid argument
Jan 17 23:08:46 fcshome ntpd[4680]: sendto(129.70.132.37) (fd=22): Invalid argument
Jan 17 23:25:35 fcshome ntpd[4680]: sendto(199.4.29.166) (fd=22): Invalid argument
Jan 17 23:25:36 fcshome ntpd[4680]: sendto(216.230.228.211) (fd=22): Invalid argument
Jan 17 23:25:49 fcshome ntpd[4680]: sendto(129.70.132.37) (fd=22): Invalid argument
Jan 17 23:42:38 fcshome ntpd[4680]: sendto(199.4.29.166) (fd=22): Invalid argument
Jan 17 23:42:39 fcshome ntpd[4680]: sendto(216.230.228.211) (fd=22): Invalid argument
Jan 17 23:42:53 fcshome ntpd[4680]: sendto(129.70.132.37) (fd=22): Invalid argument

Is ntp busted in 5.9?

Clues appreciated, thanks!

-- 
---- Fred Smith -- fredex at fcshome.stoneham.ma.us -----------------------------
  "For him who is able to keep you from falling and to present you before his 
 glorious presence without fault and with great joy--to the only God our Savior
 be glory, majesty, power and authority, through Jesus Christ our Lord, before
                     all ages, now and forevermore! Amen."
----------------------------- Jude 1:24,25 (niv) -----------------------------