Traceback, hu, don't know exactly...
Traceback (most recent call last):
File "/usr/local/share/gajim/src/history_window.py", line 167, in _fill_completion_dict
info_name = contact.get_shown_name()
AttributeError: 'tuple' object has no attribute 'get_shown_name'
I hited ctrl+X several times, it poped the History viewer window (I was in a MUC, so it took time to load, and was laggy)