I think you did well. Your track-points are 1-second apart and should be sufficient to make a good route. If the roundabout has a name, then, include that too.
Your filename (05/05/2009 20:25) and the tracks (2009/05/06 04:26:14) are 8 hours apart. Either the time on your converter or the logger is not set correctly. We are at +8 GMT.
mfm : magnificent free maps
Garmin nüvi 2575RLM v2.80, Garmin 60CSx v4.00, Garmin nüvi 205W(patched), Papago R5800 X8.5, Qstarz Q1000P (Datalogger)
Retired: GMXT Palm T|X, nuvifone A10 v5.0.77, Garmin-Asus G60 v2.43, GPSlim236 (Datalogger)