Dear Players,
At the moment, we are experiencing technical difficulties across all Nexon games relating to connectivity. Some players may be disconnected from our Mabinogi servers during this time, as well as our web site.
We are currently investigating this issue, and we appreciate your patience and understanding in the meantime.
-The Mabinogi Team
This might explain the crashes earlier.
Source
May also be related to this announcement on Maplestorys website earlier about an ISP maintenance on September 10, 2013 – September 11, 2013