Here is the fix offered by Apple: To work around this issue, users should install a configuration profile from Apple that increases the amount of time the i OS 4 device will wait for the Exchange Server to respond to its sync requests.
For best results, the profile should be installed on as many i OS 4 devices at your company as possible.
Here are the symptoms: immediately after updating to i OS 4, some users may notice that Exchange Active Sync Mail, Contacts, or Calendars do not sync, or sync very slowly.
In addition, some Exchange Server administrators may notice their servers running slowly.
Microsoft Outlook is undeniably the best feature rich application blending your online and offline transitions perfectly with its proficient capabilities on all your emails, contacts, calendar and meetings.
To begin with, Microsoft Outlook gives you incredible capabilities, and one of these is your delegate access. To make it easy, it’s like having someone to create and manage your meetings, on your behalf.
This person, who does it, is called as a delegate, meaning, you are delegating your tasks.
Now when you assign some delegate as an Editor, you are giving him/her, the privileges of creating meeting requests, sending meeting requests, editing and deleting meeting requests as well.
In addition, he/she can also be given access to receive mails pertaining the meetings, PRIVATE ITEMS and also accept and reject meetings on your behalf.