Count yourself lucky Phil, try 1.5 years for these issues, these are studio xps 1340 premium machines with top spec's & premium nbd warranty, they had engineers on them the day after I received the units, then in italy last year where they completely fecked them up not attaching video chip cooler which I had to do amongst other stuff they screwed up, allot more has gone on which resulted in offering me bnib laptop of choice which they rescinded & offered me laptops with 3 inch bigger screens & lesser spec's, now on this stint its who knows how many attempts to fix the issues, I clearly have a case to sue them tbh!
Also, I was entitled to FOC win7 upgrades back in 2010, but cause they offered new replacements these wernt actioned, then they rescinded there offer & I also lost my win 7 entitlement upgrades because dates had passed, its doesnt get much worse I can assure you, arrgghhh!!!!!!!!!!