I've had some problems with a Django application after I deployed it. I use a Apache + mod-wsgi on a ubuntu server. A while after I reboot the server the time goes foobar, it's wrong by around -10 hours. I made a Django view that looks like:

```
def servertime():
  return HttpResponse( datetime.now() )

```

and after I reboot the server and check the url that shows that view it first looks alright. Then at one point it sometimes gives the correct time and sometimes not and later it gives the wrong time always. The server time is corect though.

Any clues? I've googled it without luck.