I used ad aware 2007 then 2008 and was reluctant to change it!! but because it will not up date all the time so I thought what can be the worst thing about the 2009 version that I cant use it and take it off and go back to the 2008 with all the messing around not updating then updating so I put the 2009 version on and it is sooooo easy to use and has more protection than 2008 I would say to any1 having trouble updating on the 2008 version to put the 2009 version on its so simple to use im made up I put it on hope this helps xxx