I know ubuntu is out already but this is something that you can use to monitor a webpage.

This script will run check a for the Ubuntu 9.10 launch once every 5 mins and let you know when it’s available:

while [ 1 ]; do if [ -z \"`curl -I \"http://cdimage.ubuntu.com/releases/9.10/release/\"|grep \"404\"`\" ]; then kdialog --msgbox \"9.10 Released\"; exit; fi; sleep 300;  done

<a href="http://feedads.g.doubleclick.net/~a/99XcDO7_UNXZESNlOirXkV4_tfA/0/da"><img src="http://blog.amit-agarwal.com/wp-content/uploads/img.zemanta.com/~a/99XcDO7_UNXZESNlOirXkV4_tfA/0/di" alt="" align="bottom" />
<a href="http://feedads.g.doubleclick.net/~a/99XcDO7_UNXZESNlOirXkV4_tfA/1/da"><img src="http://blog.amit-agarwal.com/wp-content/uploads/img.zemanta.com/~a/99XcDO7_UNXZESNlOirXkV4_tfA/1/di" alt="" align="bottom" />

URL: <a href="http://www.shell-fu.org/lister.php?id=894">http://www.shell-fu.org/lister.php?id=894<h6 class="zemanta-related-title" style="font-size: 1em;">Related articles by Zemanta <ul class="zemanta-article-ul"> <li class="zemanta-article-ul-li"><a href="http://www.slumpedoverkeyboarddead.com/2009/10/29/6-things-to-do-after-installing-ubuntu9-10-karmic-koala/">6 Things to do after installing ubuntu9.10 Karmic Koala (slumpedoverkeyboarddead.com) <li class="zemanta-article-ul-li"><a href="http://www.slumpedoverkeyboarddead.com/2009/10/30/top-things-to-do-after-installing-ubuntu-9-10-karmic-koala/">Top things to do after installing Ubuntu 9.10 Karmic Koala (slumpedoverkeyboarddead.com) <div class="zemanta-pixie" style="margin-top: 10px; height: 15px;"><a class="zemanta-pixie-a" title="Reblog this post [with Zemanta]" href="http://reblog.zemanta.com/zemified/3bd96180-b82d-4d07-9be7-1ebc6fa4248c/"><img class="zemanta-pixie-img" style="border: medium none; float: right;" src="http://blog.amit-agarwal.co.in/wp-content/uploads/2010/08/reblog_e22.png" alt="Reblog this post [with Zemanta]" /><span class="zem-script more-related pretty-attribution">