Please fill in this template when reporting a bug, unless you know what you
are doing.
Description of Problem:


Steps to reproduce the problem:
1. Send a recurrence meeting from user1 to user2. Recurrence for 999
2. Login to OWA as 'User1'. 
2. In meeting fill up summary, location, description, uncheck 'All Day Event'.
3. User2 accepted the appointment, u can see in calender the list of
appointment in 'List' view.
4. Delete an appoinment from 'User1's list of appoinment, send notice to user2.
5. User2 will accept the changes, but due to problem in 'List' view cannnot
see the changes.  Now manually delete any 2 appointments from 'Users2'
lists of recurring appointments.  
6.From 'OWA' where you have logged in as 'User1', select those two 
appointments which were deleted from 'User2's list of appointment. Update
summary of both the appointment, then send it.
7.Now in 'User2' evolution mail cleint, click on 'Mail' component. Then
open the first mail and accept the update. Then open the second mail and
accept the update. Exchange connector crashed.
Therafter click on 'Calender' component, then on exchange calender folder,
exchange connector crashes always.    
Actual Results:


Expected Results:


How often does this happen? 
Always

Additional Information: