I am sorry to hear you are having issues with 2.0.11, that is in fact a Stable Release, although 2.1.4 is out for Gold Members. I can only think that there is some thing wrong with your configuration / category's.
Sorry yearly calendar? which are you referencing to? the Yearly View? if so do you mean the text goes to the left? It is designed to do that, but can be changed by adding some simple !important to your template.css, as for the Navigation not working, it should I can only think it is your template conflicting? At which we can take a look for you if you were a Gold Member.
Are you referencing to the Monday Day number? This is because you will have the events within that box which are click able and load upon a user clicking the event.
All events should show if they are added correctly and category's are setup correctly. You might find you have defined category's within the Menu Item and not added the latest ones created. Therefore it will only show the selected category's events.
The stable Jevents Versions are:
1.5.6 - Joomla 1.5 only
2.0.11 - Joomla 1.5.25/1.6.6/1.7
2.1.4 - Joomla 1.5.25/1.6.6/1.7
I hope this answers your questions? please feel free to ask some more