Did you try to open the calendar, then hit settings, then more then calendars and make sure they are all checked. I know some calendars will NOT ever synch and its a google calendar thing, such as the sports calendars, those do not synch at all. Also when you are on the google.com/calendar page, make sure all the calendars show there, if they are not the sports ones, under other calendars make sure they show there and I believe under settings at google.com/calendars I think you have to make sure they are checked there. good luck!!
Does anyone know why the sports calendars do not sync? It's pretty annoying. I just switched to an Android phone from the Pre and I had to have a separate app on the Pre to maintain sports calendars. I had hoped with Android being Goggle-backed it would actually work on this phone.
Thanks,
-- robert