soulbarn,
How many calendars do you have?
Are any of them subscribed/birthdays?
iCal Help Topic "If you can't change an event or calendar" says:
If you can’t change an event or calendar, check the following:
If it’s a calendar to which you’ve subscribed, you can change the calendar name but you can’t change its events or to-do items.
If you were invited to an event, you can change only your status for the event, the calendar where the event appears, and the event alarm.
You can’t change or delete events on the Birthdays calendar. (To show the Birthdays calendar, select “Show Birthdays calendar” in iCal preferences.) To change the birthdays that appear, open Address Book (in your Applications folder) and make your changes there. For more information, in Address Book choose Help > Address Book Help.
Open Address Book
If you can’t change a single event’s time zone or the iCal time zone, time zone support may be turned off. Choose iCal > Preferences, click Advanced, and then make sure the “Turn on time zone support” checkbox is selected.
If you want to change events on a calendar that you published on the Internet, but you’ve deleted the calendar from your Calendars list, you need to re-create the calendar with all its events, give it the same name as the published calendar, and then publish the new calendar. The new calendar will replace the previously published one.
If you can’t change an event for which you are the organizer, or you can’t change the attendee settings for an event you’ve been invited to, make sure all your email addresses are listed on your Address Book card (the card marked “me”).
;~)
