this is a common thing an there is a thread about this already. it happens to mine too. but i actually like it cos ya get to see your daily meetings first thing. apperently this only happens if you have the callender set to delete entries older than a month in the settings in calendar. a bug report has also been filed. try changeing the setting to see if it makes a differnce an let us know i will do mine now too. (i have set mine to never delete)