I have just upgraded my machine from an Asus K7M 700 AMD. To an Asus A7M 1.4Ghz AMD, and now for some unknown reason my 700 MB CD-R's are showing up as 648 MB. Normally this wouldn't be an issue but there are a couple of things I need to burn that require all of that space. So if anyone has any clues I would love to hear them. And yes I just flashed the firmware to the last revisioon found on Acers website. Oh yeah BTW the CDRW is an ACER 1832a.