I've always thought that the interface here for Yahoo Groups was super sucky in order to keep people from using it too much, and now, this glitch or ploy -- I don't know which -- has me fence sitting. It takes me three to four times clicking on the refresh button to get this page to refresh. If I select refresh-this-tab on the menu, then it does it every time, first time. None of my other open tabs to many other sites makes me click many times.
The only clue I have is that this notice below is at the top of my page now for several days. "Scheduled Maintenance: We are undertaking some essential, but extensive maintenance to improve Yahoo! Calendar. Your Group Calendar is being migrated to a much improved version of Yahoo! Calendar. During the maintenance period, you may not have access to your Groups Calendar. We sincerely apologize for this inconvenience. Your Groups Calendar is in great shape and we are working to have it available again as quickly as possible - Yahoo! Groups & Yahoo! Calendar Team"