Within MfE, this thread - it didn't appear to be high on the priority list though, so it may be worth checking on whether there's a bug raised for it, and voting there (or raising a bug if there isn't one). The more people who show interest in an issue, the more likely it is to get addressed.

The third-part calendar synch app I mentioned has a thread at http://talk.maemo.org/showthread.php?t=40408 - I've not read much of it myself as I don't use Google mail/calendars.