Description of problem:
User-visible symptoms are the same as in cloned bug. The reason is different however, this happens when:
1. evolution is in online mode
2. the account is inacessible (network unreachable, expired ticket and so on)
3. there is partially downloaded message (headers only)
4. user accesses it
5. evo never gives up displaying it


+++ This bug was initially created as a clone of Bug #810256 +++

Description of problem:
this is a variation on fairly frequent hangs of part of main evolution window with message, this time with effectively uncancellable running option of "Ověřování zprávy" (probably "Message validation"). By uncancellable I mean that if you hit cancel button, nothing in the UI changes, the previously displayed message is still displayed and this can not be changed. After some period of time, the tree view goes grey. The only way to get evo out of this state is it's restart.

Version-Release number of selected component (if applicable):
evolution-2.28.3-24.el6.x86_64

How reproducible:
random but frequent

Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:

--- Additional comment from djasa on 2012-04-05 15:23:47 CEST ---

Created attachment 575409 [details]
backtrace

--- Additional comment from djasa on 2012-04-05 15:41:05 CEST ---

Created attachment 575420 [details]
e-d-s backtrace

--- Additional comment from mcrha on 2012-04-06 14:10:57 CEST ---

Evolution is waiting for a response from your addressbook, based on the eds backtrace the LDAP addressbook. It does this to try whether to show images inside the HTML message or not. This is a long standing issue [1], I guess pretty known issue, and the workaround is to have Edit->Preferences->Mail Preferences->HTML Message tab, section Loading Images being set on other than "Load images only in messages from contacts". Similar is with contact photos, which is on Headers tab, at the top. You can alternatively force evolution to not search in remote addressbooks, or if you disable the LDAP addressbook from autocompletion (which is probably not feasible, as it's the main reason why you have it added - to be able to search in it when writing emails). I suggest to change the "Loading Images" and "Show the photograph of the sender" in preferences.

[1] https://bugzilla.gnome.org/show_bug.cgi?id=361145

Thread 2 (Thread 0x7fc189c5c700 (LWP 13926)):
#0  pthread_cond_wait@@GLIBC_2.3.2 ()
#1  0x0000003a9a01098d in e_flag_wait (flag=0x250e2e0) at e-flag.c:120
#2  0x0000003aa001cd9e in do_get_contacts (sync=1, book=0x7fc17e464aa0
    [EBook], query=<value optimized out>, contacts=0x7fc189c5b4d0,
    error=0x7fc189c5b4c8, cb=<value optimized out>, closure=0x0) at
    e-book.c:2110
#3  0x0000003aa001cfcd in e_book_get_contacts (book=0x7fc17e464aa0 [EBook],
    query=0x7fc196b8de40, contacts=0x7fc189c5b4d0, error=0x7fc189c5b4c8)
    at e-book.c:2148
#4  0x00007fc1c9b0d982 in search_address_in_addressbooks (address=<value
    optimized out>, local_only=<value optimized out>, check_contact=0,
    user_data=0x0) at em-utils.c:2207
#5  0x00007fc1c9b0e2d0 in em_utils_in_addressbook (iaddr=<value optimized
    out>, local_only=0) at em-utils.c:2279
#6  0x00007fc1c9d8fed1 in emfh_gethttp (job=0x195c630, cancelled=<value
    optimized out>) at em-format-html.c:487
#7  0x00007fc1c9d90864 in efh_format_exec (m=0x7fc178c1fb20)
    at em-format-html.c:1309
#8  0x00007fc1c9b1a16f in mail_msg_proxy (msg=0x7fc178c1fb20) at mail-mt.c:522
#9  0x0000003a8806359b in g_thread_pool_thread_proxy (data=<value optimized
    out>) at gthreadpool.c:265
#10 0x0000003a88062004 in g_thread_create_proxy (data=0x233a940)
    at gthread.c:635
#11 0x0000003a87007851 in start_thread (arg=0x7fc189c5c700)
#12 0x0000003a868e767d in clone ()