We invest in a CRM system and expect it to have robust calendar features and functions, but to the contrary we find it so bad it is disrupting business activities:

• Events not showing up on Host or Participant Calendars
• Virtually impossible to add/see  or otherwise manage participants invites to events. 
• Event invitations are fix and can't be modified.
• Event invitations get caught up in SPAM.
• There are multiple instances of the 'Are you Going' in the Event email and only one of them seems to work when clicked.  This seems to be a root cause for not getting participant feedback that they are indeed coming or participating.
• Inbound Calendar invitation not getting posted to Calendars
• Time Zones not adjusting properly on meetings.
• Having to set the time of an event in the time zone it's being held rather than the Creators time zone.
• Not being able to make events private
• When user try using zmail and zcalendar, the CRM integration is almost a manual where events, meetings, tasks need to be manually created.   This holds true for the email/calendar capabilities in CRM.
• Event's not showing up on Weekly and Monthy calendar view when multiple users are adding to them.
• etc.....
• etc........