Hi Guys,
Sorry for the late reply, been burning the midnight oil trying to get Wheezy to work with the Dell R200's ES1000 without appalling lag.
Thanks for the replies, which I'm sure will come in useful to someone else. I, however, have managed to get 1920x1200 resolution working with decent speed (admittedly only at 16bit color depth) so I'll be sticking with Wheezy.
PS - thanks for the nightlies over the years Jens; I've just emailed you some coffee money :-)