check to see if in the power settings it has been lowered, one of the power settings does reduced cpu speed, but if that ain't it and you have had your 1ghz replaced with a 867mhz then I would send it back to apple.. - Rock Sam Hotchkiss wrote: >Hey guys-- so the superdrive in my 1ghz 1gigoram 15" tibook never worked-- >and apple finally figured out it was the logic board, replaced it, and the >superdrive works now, but everything seemed slowed... > >Well-- today I noticed that my tibook is now running at 867mhz!?!? Any idea >on how to correct this without sending my 'book back? :( > > >