I suppose that is possible neko, though I find it rather unlikely as the bug tracker:
http://www.hydlaa.com/flyspray_upgrade/ is on the same domain as the forums:
http://hydlaa.com/smf/index.php?topic=33007.0. You could be right, the host might have some weird setup. It might even have redundant servers providing the same content, although hydlaa.com seems to resolve to only one ip.
All the same as he is paying for hosting and not co-location he likely does not have control of the server so there might not be much that can be done about it anyway. I am guessing this domain does a fair amount of throughput in a billing period.
I am not meaning to be overly critical, just relating something I have noticed and wondering if anything can be done or even if a cause can be identified. There are certainly many factors that can come into play when electrons span the globe.