Ajay556, I'm unsure if the Calendar application is one of the apps that Apple allows to run in the background, so launching it from time to time to make sure it updates your calendar from the server is probably a good idea.
Can you explain in a bit more detail what you're seeing? I'm not really sure what you're describing. Sorry.
Can you explain in a bit more detail what you're seeing? I'm not really sure what you're describing. Sorry.