iCal - Google (CalDav) sync for Floating events broken after 10.5.5 upgrade

I am seeing the same thing. My web based Google Calendar looks fine but all my iCal Google CALDAV entries are shifted +4 hours. Interestingly, I have a 2nd iCal CALDAV account pointing to a Zimbra CALDAV server and it has not shifted so could this be something related to the Google CALDAV server?

Yes, all this started with the 10.5.5 update. Our Zimbra server is EST (GMT-05:00). I'm not sure how to tell what zone a calendar entry "is in". All of my shifted Google CALDAV entries seem to say EST in the "note" section.

Here's another data point...on our Zimbra server, through the webmail interface, I "subscribed" (long ago) to my Google calendar...a read-only, one way sync (not CALDAV, I think it's WEBDAV) from Google to my Zimbra. Now, on the Zimbra webmail interface, the calendar entries are not shifted. On my 10.5.5 iCal Zimbra CALDAV view, the same entries are shifted 4 hours. So, there definitely seems to be something fishy with 10.5.5 iCal and the Google CALDAV.

I think I'm having a related problem. I upgraded to OS 10.5.5 yesterday and ever since, I'm having trouble with MobileMe syn. It hangs up forever and prevents other processes.

I use Zimbra calendar at work and sync to iCal using Zimbra iSync Connector version 5.0.2201.

Activity monitor revealed that the zimbrahelper was consuming 90% of my memory and CPU. I have to quit it to resolve the problem. The temporary solution is to disable Zimbra iSync Connector.

However, if anyone knows of another fix, please let me know.

Same problem here. All my ical events for the calendar that sync to googles calendar are off by 5 or 6 hours - the change to DST seems to be affecting the amount. After a bunch of experimenting, I think I've found a workaround. It's just a matter of sliding the wrong times back into the right place in ical - and you can use google calendars as a guideline (it didn't get changed). When you move the events in ical, they don't move correspondingly in goocal unless you put them back in the wrong place, so if you move them to the right place everything is hunky dory. It's a bunch of work depending on how much stuff you have - I spent an hour doing this last night, got half way done, will finish it up this morning.

My guess is that it's a problem with isync - I had it pop up with an error message soon after updating to 10.5.5 - but I'm no expert. I do like how goocal seems to be cool with the wrong entries until you change them - it seems to know who's having the problem.

Well duh....I removed my Google CALDAV account entry in Apple iCal, then recreated it and all of my entries are back in the right time zone. Also, somehow my Zimbra/WEBDAV subscription to my Google Calendar magically fixed itself. So, I'm good to go now.

My Google Calendars stop syncing after 10.5.5. I deleted them from iCal but it was impossible to add them again. Any tip?

I started having the same problem. There were some issues with certain events not syncing so I decided to delete the calendar and then set it up again. Now, iCal is not syncing any of my gCal events. Has anyone solved this problem?

I'm having the same problem here. 10.5.5 screwed up all the syncing with my google calendars. Removing the calendars didn't solve the problem. Now, when I add them again, they don't get synchronized...

Anyone knows how to solve this?