For me it was def. the chemical make up of the sweat/oil on my hands. Looked so bad I upgraded to an iBook 1Ghz G4. I do miss that 15 inch screen, though. On Jul 27, 2004, at 7:45 PM, luke wrote: > On Tuesday, July 27, 2004, at 10:33 AM, bkasten at octavian.net wrote: > >> and possibly something having to do >> with what is on the skin at the time of use (sweat, lotion, whatever). > > some people's skin acidity level is probably higher...