Why was the Calendar View left off the choices in Preferences. While you are answering that question add Task List, Opportunity List, and Company List. This should be a very easy fix. In 9 years as an ACT! Consultant I have never found anyone who launches ACT! to see the Welcome Screen or there own My Record.
New features are nice but it's the little daily annoyances that push loyal customers to rethink their product choices.