I'm new here, so please forgive any awkwardly stated questions. I was heading to the store to purchase the current CD to update our Norton 360. Then I read where someone had purchased one at Office Depot just the other day & it caused crazy problems. I've bought mine there every year for a number of years rather than download because of price. This year I was heading to Staples because you don't have to mess with the rebates. Is this common a common problem when installing from cd rather than downloading a renewal upgrade? I'm limited with my tech knowledge and can't imagine having to deal with trying to straighten out computer problems caused by an install. Remembering a nightmare a few years ago when it took me a day trying to fix an upgrade that wasn't installing properly. Maybe the extra $20 is worth doing it online? Thanks in advance for any insight on this.