ROM's not rooted.
I have a stock Verizon Droid. Once I got the latest update (The calendar says it's build 2.2), the problem has stuck.
The problem is this:
If I go into month view, it sticks in month view and won't remember the last view that I had up. It sometimes won't remember the current day either.
In prior versions, I simply went to the day view (which I perfer), Home'd out, and then killed the calendar process. This made it remember the day view.
Now, with the current version, that fix no longer works. When I go into the calendar, it defaults to month view and I can't make it stop doing it.