I stumbled over this survey. Is it just me or does it sound like Dell is actually thinking about selling computers with Linux?

Sounds to me that they are going to be, I'd say that they will still sell Windows but you will have the option to save money by having Linux installed. Or maybe I'm going mad.

it should happen down the road alittle , But don't bother holding your breath as it may be a while yet
http://www.desktoplinux.com/news/NS8382062536.html
http://www.reghardware.co.uk/2007/02/28/dell_to_offer_linux/
http://www.crn.com/hardware/197800591

There probably considering it as some answer to China's $150 Linux (Municator) pc.

they are replying to HP's linux Based PC's and more than likely it will embrace work Stations and servers and will use the Novell/SuSE or Redhat OS (mostly because they are not updated as often as say Fedora Core which is on a 6 month turn around) (notice that Linspire aka Lindowswas not included in the list, HP uses it on their Linux PC's)