This is by far the most annoying bug I've ever experienced on a smartphone. I would downgrade to PR 1.2 to get rid of it but that is not possible... Phone, SMS, calendar and email are the most important applications for me and I need my calendar to plan my appointments multiple months ahead. I sync my calendar with google via CalDAV and that's why the bug occurs, it won't occur if you store everything locally.

The above mentioned workaround does work, but you have to do it every time you want to look further into the future, so it is pretty annoying. What I do is setting every appointment as repeating event (repeating every day but it ends the day it begins so there is only one event in my calendar) and this way all events are displayed in the future. This is just another workaround but more comfortable than the other.

All at all I think it is an audaciousness from Nokia not to fix this bug, it can't be that difficult and that phone was pretty expensive.