Hello,
Back on this subject : I installed Zimbra 5.0.1, and created calendar subfolders through CLI.
Do you know if a bug was created for "Checkbox state doesn't keep" problem ? I searched in bugzilla, but I didn't find some. Or maybe it was solved in the last version (5.0.2) ?
Thanks.
EDIT : I created the bug in bugzilla, and I explained how to fix it, for those that would like to fix it themselves, before it is officially released :
Bug 24535 - Check state and color Calendar subolders problem at startup