I've also updated Samsung Magician to the latest version for my 840 Pro drive and I had absolutely no problem during the update and eventually Rapid Mode feature was improved dramatically ! However since then the magician software is included to the startup and can't be removed with the Task Manager. The previous version could. May any kind soul let me know how to remove it from the startup and of course remove the icon from the system tray with every boot ? Need to add that my OS is Win 8. Thank you !