Calendar Empty (Almost); Google Calendar is Fine

[webmanoffesto]

In Google Calendar on my desktop all my appointments show correctly. Yesterday the Calendar on my Samsung Galaxy I900 (Vibrant) suddenly showed almost no appointments. Right now, in all of next week, there is only one appointment; the appointment I created after the "malfunction".

Rebooting my phone didn't help. I checked Calendar Settings and that all seems to be fine.

What could the problem be? How do I resolve this?

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Samsung Galaxy I900 (Vibrant)
bought in US, unlocked T-Mobile
still on Firmware 2.1-update 1
Kernel 2.6.29
Build Eclair
- I know, I know, I need to upgrade.
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[webmanoffesto]

Solu

Suddenly cant sync Samsung Galaxy S (Android 2.1) calendar with Google Calendar (no issues with Contacts/Gmail sync) - Calendar Help
Calendar won't sync with Droid - Google Mobile Help
I was having a problem with events not showing up, and just figured out how to do this:

1. Press your device's < Home > button, then press < Menu >.
2. Select Settings and then Applications.
3. Select Manage applications.
4. Press < Menu >, the select "Filter."
5. Select "All"
6. Select Calendar Storage.
7. Press "Clear data."
8. Wait for everything to re-sync.