a few questions from a new user

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http://www.linuxforums.org – I have a few questions about using Ubuntu 9.1 1. How do you change the time? I go into the settings to change the time, but the time never changes. 2. Is Ubuntu based upon Debian? 3. What is the default password for root? I was reading that Ubuntu doesn't have a default password, just press enter, or type in my password, but it doesn't say. 4. I have been using Mac OS X and would like to continue using programs equivalent to iCal and Address Book. Any ideas what programs I can use? Thanks!! Michael (HowTos)