Remembering the last used mirror

[Magnus Hagander <magnus(at)hagander(dot)net>]

Hi!

I've added code to remember the last mirror used (using a cookie) and
automatically download from that mirror the next time the same user
comes in to the site. You can see it in action at
http://magnus-master.pgadmin.org/ftp/.

Right now, it's set to redirect to the last used mirror after 5 seconds.
Before I commit the code, does anybody have a different idea on how long
that time should be? (Or for that matter, does anybody think this whole
thing is a crappy idea?)

//Magnus