Well I was feeling in a nerdy mood this morning and looked up the model number for my hardrive on my brand new powerbook... TOSHIBA MK8026GAX http://www.toshiba-europe.com/storage/Index.asp?page=PFT&nav=ISH_PRS And found this out... Buffer size 16,384kByte Now according to trusty google calculations... 16 384 kilobytes = 16 megabyte A hardrive with 16mb of cache??? Is that right? Surely they must mean kilobit? 16 384 kilobit = 2 megabyte I really do hope that it is in fact 16Mb but for some odd reason that just doesn't seem likely.