I usually try and build a new system every two or three years.  So maybe next year I will check out the Phenom II.  I have also heard it is lightning fast.  By then I should be going to 64Bit.  So I may wait until Windows 7.

Don't get me started on Norton.  Their new update to 2009 from 2008 just demolished my installation of Avast Antivirus....  And now the dumb thing won't uninstall correctly.