Thanks Dan and Rick,

That solves the mystery!

I know the script that processes the data you type in (i.e. your name and address) checks whether the data came from a web page on this site (sowpub.com), for security reasons I presume. I'm not sure if I can easily turn this off (without partly rewriting the script), or if I could whether it would be a good idea. I'll look into it anyhow.

Thanks for the fantastic detective work! You two sure know your stuff. :)

- Dien