i agree with DV. it sounds like routine maintenance to me, rather than the effects of a bombing on the ol' bicycle. i doubt if DV's wheels require a truing each month,in the sense that a very wobbly wheel requires a truing, but by making tiny adjustments to the trueness (truth?=P) of your wheelset frequently, you help assure a longlife of the wheelset.

as for chains, EVERYone who rides regularly needs to keep that chain loobed and clean if they want their bicycle to function properly. as for chain tension issues, i find it's easier to get the tension right on my fix than it is to put the rear wheel back on my mtn bike, with the jungle that resides in those dropouts.

so, yeah, if DV is brakeless, that saves some of maintenance. as does a lack of derailleurs (goshdurn pulleys!). the maintenance DV described is of the sort that any meticulous cyclist will perform on their bike. unless they have one of those shaft-drive bicycles. do they make shaft-drive fixies?

-rob