For some reason, Windows7b ReadyBoost fails my 8GB Cruzer micro (SanDisk) that is rated for ReadyBoost. Yet, my 1GB Kingston SD card that is not rated for ReadyBoost passes the test. I would like to warn that using the SD card for ReadyBoost causes Windows to totaly freez up, a few min after booting. Other than that, my problems with this OS have been minimal. I just need an updated driver for Intel 945 Express Chipset grafix.