I am currently investigating the reason(s) for high latency and packet losses at random times during the day.
Although it's possible it is due to congestion within the data centre that both my virtual server and the server used by f8lure.mouselike.org are located at (albeit with different hosting providers), I believe it to be unlikely.
Ping Response Graphs
Ping response graph to watfordjc.com for 2011-05-25.
I restarted the server multiple times on this day, testing a faulty bootup script.