Published Sun, 15 Jun 2008 08:15:00 +0000
There were some short periods of a few minutes where throughput was low
yesterday evening at around 18:10 and 19:00 as well as a longer period
from 22:30 to 23:00 and 00:45 to 01:00. During this time customers had
slower than normal throughput but remained connected and working.

This was due to a denial or service attack *by* one of our hosted
customers. Our logging has allowed us to trace the specific machine. We
suspect a virus or other infection but we are talking to them now (yes,
on a Sunday morning).
See http://aaisp.blogspot.com/2008/06/some-slow-throughput-saturday-night.html