While the calendar on the N900 is a huge win over the previous models (haha), it is lacking a few options which are needed to seriously use it.

One of the problems with the calendar is that you can only have recurring events which are repeated daily, weekly, monthly or yearly, but cannot have bi-weekly events or events which take place on every first Wednesday of a month (or even every second wednesday in every third month).

I created a brainstorm proposal for these issues (based on bugs 6505, 5954 and 5955): http://maemo.org/community/brainstor...r_application/