Try using the DVI->HD15 dongle and connecting the analogue side of the monitor (or an analogue monitor).
(In other words, that worked for me..!!
Can you be more specific about what the known issue is so that I can avoid it on our machines out in the field?
i.e. Is it a known issue with the Dell 1701fp?
Or is it a DVI issue in general?
Thanks for you quick (and helpful replies!)