error on trying apply updates on new hardy install

[hcaleman]

Finally installed hardy on my Portege 2000 via PXE (easy), when I sudo apt-get update I get the following error at the end of the string of code:

W: GPG error: http://security.ubuntu.com hardy-security Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W: You may want to run apt-get update to correct these problems


Re running apt-get update shows the same issue over and over again. Any ideas what I should do next. This is my first linux install.

[dileepm]

Try apt-get update -f. The -f option is to fix up any dependencies or errors at the time of installing...

[zvacet]

sudo apt-get update && sudo apt-get upgrade