Can't delete calendars or events from iCal

Question

I'm trying to delete Calendars from iCal, but after I delete them, they reappear. I've tried deleting the calendars and calendar cache from the user library, but to no avail. In addition, when I try to change or delete an event, it ends up duplicating the event so that there is multiple copies of the same event on the same day. I've tried to find someone else who has had this problem, but came up empty. Any suggestions? Can I get rid of iCal and reinstall it somehow?
P.S. there are multiple users on this computer, but only one of them uses iCal.

Answer 1

Good question.
You do not have to remove the entire directory. However, there are other caches besides the com.apple.ical directory that may be present that can impact iCal's performance. These directories are often created by non-Apple programs involved in syncing (Entourage, Pocket Mac, Blackberry software, Palm Desktop software, etc.)
The question is, which caches might be there for each unique computer setup and are they doing something to iCal? That takes a great deal of work which few people are willing to do (not to mention you have to know which folders are the culprits)
Cache files are re-generated once the program that uses them is launched. I have never personally encountered a program that stored any vital data in the cache. Caches are (in general) used to improve program performance of an application during use, not to store data.
For users that are concerned about their caches, removing ~/Library/Caches/com.apple.iCal/ is certainly an acceptable alternative (if not all encompassing).