Comment 36 for bug 160413

For anyone who is having the above problem, the fix for me was to replace the 8169 driver with realteks latest 8168 driver from their website. This in combination with NETWORKDOWN=no in the /etc/init.d/halt script worked for me - WOL is now working nicely again.

I guess there is a small problem with jaunty upgrade that it is installing the wrong driver.