Expected Win7 but got Win8 without downgrade rights (as advertised).
Purchased Acer laptop advertised with Win7 Pro preloaded with Win8 downgrade rights. Specifically sought Win7 as Win8 rubbish on non-touch devices (great on smartphones and tablets though); also sourced for a client so didn't want to pass the hassle on. Ended up Win8 only - confirmed by Acer UK (not Simply Acer) after call. This whole episode cost me money as this job was already priced (and I had to provide Win8 training). Good laptop though, shame Win8 spoils it.