Почему присоединен к Pipelight Geary? И как я могу отключить его?

Когда я запускаю Geary, я получаю следующий вывод в терминале:

user@ubuntu-machine:~$ geary
[PIPELIGHT:LIN:unknown] attached to process.
[PIPELIGHT:LIN:unknown] checking environment variable PIPELIGHT_SILVERLIGHT5_1_CONFIG.
[PIPELIGHT:LIN:unknown] searching for config file pipelight-silverlight5.1.
[PIPELIGHT:LIN:unknown] trying to load config file from '/home/user/.config/pipelight-silverlight5.1'.
[PIPELIGHT:LIN:unknown] trying to load config file from '/etc/pipelight-silverlight5.1'.
[PIPELIGHT:LIN:unknown] trying to load config file from '/usr/share/pipelight/configs/pipelight-silverlight5.1'.
[PIPELIGHT:LIN:unknown] sandbox not found or not installed!
[PIPELIGHT:LIN:silverlight5.1] using wine prefix directory /home/user/.wine-pipelight.
[PIPELIGHT:LIN:silverlight5.1] checking plugin installation - this might take some time.
[install-dependency] wine-silverlight5.1-installer is already installed in '/home/user/.wine-pipelight'.
[install-dependency] wine-mpg2splt-installer is already installed in '/home/user/.wine-pipelight'.
[PIPELIGHT:WIN:silverlight5.1] embedded mode         is on.
[PIPELIGHT:WIN:silverlight5.1] windowless mode       is off.
[PIPELIGHT:WIN:silverlight5.1] linux windowless mode is off.
[PIPELIGHT:WIN:silverlight5.1] force SetWindow       is off.
[PIPELIGHT:WIN:silverlight5.1] window class hook     is on.
[PIPELIGHT:WIN:silverlight5.1] strict draw ordering  is off.
[PIPELIGHT:WIN:silverlight5.1] replaced API function CreateWindowExA.
[PIPELIGHT:WIN:silverlight5.1] replaced API function CreateWindowExW.
[PIPELIGHT:WIN:silverlight5.1] replaced API function TrackPopupMenuEx.
[PIPELIGHT:WIN:silverlight5.1] replaced API function TrackPopupMenu.
fixme:advapi:RegisterTraceGuidsW (0x7422a7, 0x7e0120, {aa087e0e-0b35-4e28-8f3a-440c3f51eef1}, 1, 0x6cf648, (null), (null), 0x7e0120): stub
[PIPELIGHT:WIN:silverlight5.1] init successful!
[PIPELIGHT:WIN:silverlight5.1] OpenGL Vendor: ATI Technologies Inc.
[PIPELIGHT:WIN:silverlight5.1] OpenGL Renderer: AMD Radeon HD 6570
[PIPELIGHT:WIN:silverlight5.1] Your GPU is in the restricted whitelist, using limited hardware acceleration.
[PIPELIGHT:LIN:silverlight5.1] using thread asynccall event handling.
err:ntdll:RtlpWaitForCriticalSection section 0x7ea752c4 "lock.c: LOCKTABLEENTRY.crit" wait timed out in thread 002b, blocked by 002a, retrying (60 sec)

(process:5908): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
err:ntdll:RtlpWaitForCriticalSection section 0x7ea752c4 "lock.c: LOCKTABLEENTRY.crit" wait timed out in thread 0026, blocked by 0023, retrying (60 sec)

Иногда я должен уничтожить и перезапустить Geary несколько раз для получения его выполнение. Последняя ошибка повторяется каждую минуту.

Я не понимаю то, что заставляет Pipelight быть присоединенным к этому. Нет никакой причины его. Кто-то знает, где мы можем изменить это поведение и ограничить его браузерами по умолчанию?