Guys,
Some very good reading here. My ST2 seems to be doing similar. Running fine for about 45 minutes and then starting to run rough before cutting out. Luckily had a few of the local DSC guys around me coming back from Donnington when I ended up on the side of the M1. After recharging the battery at home and riding with the multimeter attached, everything was fine for about 10 minutes and then the voltage gradually drops of till it is about 11.8. I assume this is the rectifier failing at temperature (there is melted sealant coming from the base of it!). I just need to find a replacement item as Ducati can't supply one at the moment. Anyone know a local supplier of the Electex items? Might have to check out the rest of the wiring and the fuel filter too I think.