Please tell me why!!

[Edenyard]

   Please can someone look at this site and tell me why it makes 
Arachne V1.60-b1 AND V1.61 behave strangely:

      http://www.hornby.com (when you get there, select CATALOGUE)

   I find that Arachne starts to download the catalogue page and then
behaves very oddly when the status line says "Loading page from disk"
and the green bar gets to about 30%.

   Both versions of Arachne mentioned above do the same thing and I'd be
very grateful if someone could tell me why.

   Thanks,

      Ron.