i was just trying out the demo and probably found a little bug. If you change the timezone of a calendar entry (i changed from GMT + 1 to GMT), then everytime you double click the entry, edit and save, it will be listed one hour later, if you do not edit the time.

Don't know, if this is the right forum to post this, but i hope, that helps you increasing quality of this (my first impression) nice software.

Excuse my bad english, but it is late and i'm not as much using english as i should