Going out on a limb here, but perhaps you have to go all the way to 9.2.2. > Thanks for the suggestion, Tom. > > However, irrespective of which set of extensions I use, the machine simply > does not work unless the shift key is depressed at startup. > > I have now removed 9.2.1, reinstalled 9.1 and will try a fresh install of > 9.2.1 later today. > > > P.