Lisbeth wrote: > Shouldn't we however first make certain that Gerry hasn't happened to > have disconnected some USB-device after the Tibook has gone to sleep? > Several have reported thoose panics under such conditions and changing > that habit to instead disconnect before sleep has solved the problem. Ah...that could be it. I do tend to shut the lid then pull my wireless keyboard dongle and printer cable out. I'll do it the other way round and see how things go. Much better than re-installing the OS :) Many thanks to everyone who responded. Gerry