VM DNS is woeful at the best of times. The first thing I do when someone asks me to "sort their PC out" and I notice they're on VM is suggest they move to OpenDNS. The change is immediate and (to them) shocking. Loading times reduce by a mile. I've not seen any downside to OpenDNS personally, but a mate reckons it can mess up shortcuts in Firefox. That's never happened to me though, so... LOL