I've read similiar postings, but rebooting doesn't work for me (well it does,
but only for one save then it's back to not working). Everything works fine
in a newly created calendar though.

When viewing the monthly calendar, nothing happens when I double-click to
open a new event. When viewing a single day's calendar, I can type something
into a time-slot, but when I try to save it it..."cannot save item".

Thanks for any help!