My favorite virus company (McAfee) is beta testing a Windows Mobile 5 product! (http://blogs.msdn.com/jasonlan/archive/2006/06/15/632093.aspx) The only virus scanner I will tolerate on my machines is McAfee’s auto-updating  product.  I would hope the mobile version also auto-updates over my EVDO connection – we will have to see!  Also, I would love to see McAfee allow me to pay a yearly fee to protect all my devices (2 computers, smartphone & PDA).