#0  0xb6f8ebfc in g_type_check_instance_cast ()
   from /usr/lib/libgobject-2.0.so.0
#1  0x08071f31 in notify_changes (ctx=0x80f3fd0, 
    uri=0x856b7b8 "https://mail.o-t-i.net/exchange/cory/Calendar/", 
    type=E2K_CONTEXT_OBJECT_CHANGED, user_data=0x80e67b8)
    at e-cal-backend-exchange-calendar.c:538
	__PRETTY_FUNCTION__ = "notify_changes"
#2  0xb70594fb in polled (session=0x80f34b0, msg=0x9361f30, 
    user_data=0x8568c28) at e2k-context.c:2323
	ctx = (E2kContext *) 0x80f3fd0
	results = (E2kResult *) 0x9175ee8
	nresults = 1
	i = 0
	ids = (xmlNode *) 0x87b2e40
#3  0xb7028506 in ?? () from /usr/lib/libsoup-2.4.so.1
#4  0x080f34b0 in ?? ()
#5  0x09361f30 in ?? ()
#6  0x08568c28 in ?? ()
#7  0x00000000 in ?? ()