Slow Single sign-on Joomla

Hi at Joomdle

I am testing Single sign-on with Joomdle, but am struggling with slow logon.
Joomla ver 2.5.8
Joomdle ver 0.9
Moodle ver 2.4+
Everything are hosted on :
Windows server 2008
PHP-version 5.4.6

have only created 3 users (synced with Moodle), and 2 courses in Moodlle.

If I sign-off and the sign-on again with one of the uses within ca. 10 minutes after sign-off, the Sign-on is pretty fast (within 2 seconds).
But if I sign-on later than 10-20 minutes after last Sign-off, then Sign-on seems to be very slow up to 15 seconds.

Hope someone have suggestions what to look in for improving Sign-on time.

Thanks in advance and a very happy X-mas.

Hi. I never saw this behaviour, but I have not worked much with Windows either.

You could try looking at server logs to see if you find the cause of the delay...