I've noticed unusual load on the relay. Notice the huge change in load between 3-8 am (CET).
May 14 03:49:44.000 [notice] Circuit handshake stats since last time: 5592/5592 TAP, 40516/40516 NTor.
May 14 09:49:44.000 [notice] Circuit handshake stats since last time: 5864/5864 TAP, 58290/58290 NTor.
May 14 15:49:44.000 [notice] Circuit handshake stats since last time: 35313/35313 TAP, 72399/72399 NTor.
May 14 21:49:44.000 [notice] Circuit handshake stats since last time: 98315/98315 TAP, 77724/77724 NTor.
May 15 03:49:44.000 [notice] Circuit handshake stats since last time: 420868/423426 TAP, 89627/89627 NTor.
May 15 09:49:44.000 [notice] Circuit handshake stats since last time: 1362584/1364077 TAP, 81196/81197 NTor.
May 15 15:49:44.000 [notice] Circuit handshake stats since last time: 5488/5488 TAP, 78317/78317 NTor.