Empty Calendars

I like to start my old topic again:
http://www.zimbra.com/forums/zimbra-...-0-caldav.html

I've been upgrading my iPhone to 3.1 and Zimbra to 6.0 (Release 6.0.0_GA_1802.RHEL5_20090830140212 CentOS5 FOSS edition.)

This is getting from bad to worse. With the WUI and iCal on my desktop there are no problems. However, on the iPhone, my own calendar and those shared by others are empty. Before, only the shared ones by others where empty. As work around I can create a new calendar and move all items to it, but this is far from what it should be. Another work around is to use the WUI on my iPhone.

Logfiles from my iPhone are showing the same errors as before, but now for both the shared ones and my own calendar.

I like to post some more information after some testing:

Changes or new calendar items made on my iPhone are visible with both iCal on my desktop en the WUI.

Changes or new calendar items made with the WUI or iCal are not visible on the iPhone.

It looks like the iPhone is not able to read from the server, writing is not a problem.

This occurs with my own calendar.

I think I can isolate the problem to the first calendar. All new calendars, my own or shared by other users, can be viewed as it should.

I am having a similar problem with at least one 3G iphone after it was upgraded to 3.1. In my case, the server is 5.0.18.

Web client and iCal are accurate. The iphone calendar stopped syncing new appointments. On the iphone I turned Calendar sync to Off and then On, and now many of the older appointments no longer sync to the iphone.

i also have the same problem : shared calendars (ZCS OSE 6) are empty on iphone 3.1