# Calendar slow/unresponsive after in Mountain Lion

<https://discussions.apple.com/message/21005336#21005336>

- Host: [discussions.apple.com](https://links.thingelstad.xyz/hosts/discussions.apple.com/)
- Saved: June 11, 2013 (2013-06-11T22:22:11Z)
- Record: https://links.thingelstad.xyz/links/8511d066f929/
- JSON: https://links.thingelstad.xyz/links/8511d066f929.json

## What Jamie wrote

This solved my terrible slowness, spinning beach ball issues with Calendar.

> Remove the Calendar from Mail, Contacts & Calendars pref panel (just uncheck from the account). Then go into Calendar and make sure the account is removed. If its not, remove it. Delete `~/Library/Calendars/`. Delete `~/Library/Preferences/com.apple.iCal.plist`. Go back into the Mail, Contacts & Calendars pref panel, put the calendar back. Give it some time to download.

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