Slow Second Access to Internet

[Mike -- EMAIL IGNORED]

In my FC7, using Firefox, if for example, I access
www.google.com, I get an essentially instantaneous
response.  If I then close the browser, reopen it,
and again try to access google, there is a long
delay, perhaps a minute before I get the response.
(I note that my browser is set to delete all
private on closing.)  During this delay, the
browser reports that it is looking up the URL.
If I then wait a few minutes I can repeat the
whole scenario.

I suspect that something similar may be happening
with my Pan news reader.

Any suggestions?

Thanks,
Mike.