You're right about the browser behaving the same way, but reloading the page solved it. I would have supposed that to be a sign that the browser caches the page, not the server. I don't think that
LWP::Simple inherits browser settings, though. That leaves me with my ISP possibly caching pages, although I can't figure why a reload would solve the problem in this case.
And I definitely can't change the page itself (it's Yahoo's weather service - and yes, I checked: the terms of service don't seem to forbid the collection of weather data).
Thanks for your help.
CombatSquirrel.
Entropy is the tendency of everything going to hell.