I've had my PB TiBook 1Ghz for 4 months and never had this happen before. Running on battery it gradually ran down, gave me an 8 minute warning - but then ran for an hour after that. Strangely though, it ran for around 55 minutes with 0% battery!! For the first 15 minutes of it at zero, I was using it, surfing the net, downloading more widgets. Then I left it and went to bed. When I connected the power and woke it up, the clocks (widgets) momentarily displayed the time it finally expired - half an hour after i'd left it!! Now it's not like it was idle all that time, as i have several widgets that use a fair share of CPU (clocks, monitoring etc). As I'd used it a different times on battery last night i don't know how much total time i got out of the battery this time. But as I say, every other time I've run the battery down, once it hit 0% it's turned off then. Does anyone know what might have happened?? Is it simply a case of the battery monitor being way out? I hadn't heard this as a problem for this version of Powerbook or Jaguar (the revised 10.2.8 which fixed battery estimates) Well as always, I've crapped on too long, sorry!