I'm pretty sure you can only sync one calendar at a time with MfE.

But every few days or so I am getting the issue where sync fails with google and I have to clear the N900 calendar and do a full resync. My wife is syncing to the same calendar with her iPad and she has not had any problems.

It seems like a few people are having this issue - does anyone know how to diagnose it? Is there a log somewhere I can monitor to try to narrow down the issue?