I can confirm this.
A normal evolution run shows the following warnings:
  CalDAV Eplugin starting up ...
  (evolution-2.6:22253): evolution-mail-WARNING **: ignored this junk plugin:   not enabled or we have already loaded one
  (evolution-2.6:22253): e-utils-WARNING **: Plugin 'Bogofilter junk plugin'   failed to load hook 'org.gnome.evolution.mail.junk:1.0'
  (evolution-2.6:22253): camel-WARNING **: camel_exception_get_id called with NULL parameter.
Now when the help contents is opened, it shows this
  /usr/share/yelp/info.xml:0: error : unterminated entity reference  development tools.
  Unmatched element: br
In that case, when evolution is closed, it warns
  *** glibc detected *** corrupted double-linked list: 0x00000000005daa00 ***

When I attach to evolution with gdb, I see the following:
[reading lots of symbols]
0x00002ba731f5a94b in pthread_setcanceltype ()
 from /lib/libc.so.6
(gdb) thread apply all bt

Thread 6 (Thread 1082132832 (LWP 22306)):
#0  0x00002ba732b5ca9a in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00002ba72e230f22 in e_msgport_wait ()
   from /usr/lib/libedataserver-1.2.so.7
#2  0x00002ba72e23165b in e_thread_busy ()
   from /usr/lib/libedataserver-1.2.so.7
#3  0x00002ba732b5a0fa in start_thread () from /lib/libpthread.so.0
#4  0x00002ba731f4ece2 in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 5 (Thread 1090525536 (LWP 22309)):
#0  0x00002ba732b5ca9a in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00002ba72e230f22 in e_msgport_wait ()
   from /usr/lib/libedataserver-1.2.so.7
#2  0x00002ba72e23165b in e_thread_busy ()
   from /usr/lib/libedataserver-1.2.so.7
#3  0x00002ba732b5a0fa in start_thread () from /lib/libpthread.so.0
#4  0x00002ba731f4ece2 in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()
Thread 4 (Thread 1098918240 (LWP 22311)):
#0  0x00002ba732b5ca9a in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00002ba72e230f22 in e_msgport_wait ()
   from /usr/lib/libedataserver-1.2.so.7
#2  0x00002ba72e23165b in e_thread_busy ()
   from /usr/lib/libedataserver-1.2.so.7
#3  0x00002ba732b5a0fa in start_thread () from /lib/libpthread.so.0
#4  0x00002ba731f4ece2 in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 1099184480 (LWP 22312)):
#0  0x00002ba731f45e22 in poll () from /lib/libc.so.6
#1  0x00002ba730c6ed00 in g_main_context_check ()
   from /usr/lib/libglib-2.0.so.0
#2  0x00002ba730c6f18a in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
#3  0x00002ba72f51bb90 in link_thread_io_context ()
   from /usr/lib/libORBit-2.so.0
#4  0x00002ba730c87b6b in g_static_private_free ()
   from /usr/lib/libglib-2.0.so.0
#5  0x00002ba732b5a0fa in start_thread () from /lib/libpthread.so.0
#6  0x00002ba731f4ece2 in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 1107577184 (LWP 22314)):
#0  0x00002ba732b5ca9a in pthread_cond_wait@@GLIBC_2.3.2 ()
   from /lib/libpthread.so.0
#1  0x00002ba72e230f22 in e_msgport_wait ()
   from /usr/lib/libedataserver-1.2.so.7
#2  0x00002ba72e23165b in e_thread_busy ()
   from /usr/lib/libedataserver-1.2.so.7
#3  0x00002ba732b5a0fa in start_thread () from /lib/libpthread.so.0
#4  0x00002ba731f4ece2 in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 47997159702112 (LWP 22297)):
#0  0x00002ba731f5a94b in pthread_setcanceltype () from /lib/libc.so.6
#1  0x00002ba7320bb840 in __malloc_initialize_hook () from /lib/libc.so.6
#2  0x00002ba731e87200 in ?? ()
#3  0x00002ba731ef5341 in posix_memalign () from /lib/libc.so.6
#4  0x0000000000000020 in ?? ()
#5  0x00007fff7d03de00 in ?? ()
#6  0x00002ba7333e739f in _X11TransSocketRead (ciptr=<value optimized out>,
    buf=0x0, size=2) at Xtranssock.c:2140
#7  0x00002ba7333eacf3 in _XRead (dpy=0x0, data=0x0, size=1)
    at ../../src/XlibInt.c:1074
#8  0x00002ba72e89f088 in ?? () from /usr/lib/libgnomeui-2.so.0
#9  0x0000000000000060 in ?? ()
#10 0x0000000000000000 in ?? ()
#0  0x00002ba731f5a94b in pthread_setcanceltype () from /lib/libc.so.6

Well I hope this gets you somewhere. If I can download a debug build/package of evolution somewhere (or compile it easily), I can look at it into more detail if needed.