Update: I disabled spread spectrum and some overclocking options in
BIOS. Now the clock skew / time difference is only minimal!

Please read comments #11 and #12 from another bug:
https://bugs.launchpad.net/ubuntu/+source/adjtimex/+bug/553237/comments/11
https://bugs.launchpad.net/ubuntu/+source/adjtimex/+bug/553237/comments/12


** Description changed:

  No matter which ntp server I choose, the time jumps ahead after a day or so 
for 10 to 20 minutes. It looks as if the timer is not correct when counting.
  I'll try without the ntp synchronizing, just to see if this relies to the 
time/date panel in gnome-panel.
  
  Edit: the problem looks to be the clock applet itself, it does not keep
  a steady timer, it jumps ahead 10-20 minutes after several hours.
  
  Update:
  This problem is called "systematic time drift", it seems to happen a lot and 
it is explained in the manual page:
  http://manpages.ubuntu.com/hwclock
  http://bugs.archlinux.org/task/13684
  
  One solution is to install package: adjtimex
+ 
+ Update 2: I disabled spread spectrum and some overclocking options in
+ BIOS. Now the clock skew / time difference is only minimal!
+ 
+ Please read comments #11 and #12 from another bug:
+ https://bugs.launchpad.net/ubuntu/+source/adjtimex/+bug/553237/comments/11
+ https://bugs.launchpad.net/ubuntu/+source/adjtimex/+bug/553237/comments/12

-- 
time drifting, jumps ahead, with/without ntp server
https://bugs.launchpad.net/bugs/104091
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