Thanks for the info! I will look into the logs soon to see if I can zero
this down to only a few instances.

On 24 August 2011 01:57, Robert Kluin <[email protected]> wrote:

> There have been many discussions on this topic.  I think the general
> consensus is that it is pretty rare to find clocks that are out of
> sync by very much (seconds), but it is possible.  Probably if you were
> seeing this across your whole app it wasn't the issue.  If it was
> isolated to a subset of instances, perhaps.  The instance is indicated
> in the log entries, you could always download them and see if there
> was a correlation between errors and the instance.
>
>
> Robert
>
>
>
>
>
>
> On Tue, Aug 23, 2011 at 15:26, nischalshetty <[email protected]>
> wrote:
> > Haven't yet got a reply but the errors have slowed down. It's still
> > appearing for a subset of our users though since I can see them in the
> logs
> > at regular intervals. I saw similar complaints on the twitter mailing
> list
> > but they seem to be suggesting users to check if their system clocks are
> out
> > of sync.
> > I remember reading that the system clocks on the appengine servers can be
> > off by a few hours. Is there a way I can think of a possible solution?
> Would
> > moving the "login" module of my app to a backend help? Will the backend
> > clock be in sync or it can have the same problem of the time being off by
> a
> > few hours?
> > Any pointers to making sure we have an updated clock would be helpful.
> The
> > clocks being off by a few minutes won't affect us but an hour or so I
> guess
> > would make the oAuth tokens invalid.
> >
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