Thanks for the update. My laptop is now running stably with InCD 4.2.4.1. Is there an advantage to upgrade to 4.2.9.1? I'm afraid that it may uninstall InCD in the process and my DVD drive may not be able to write anymore, like the last time when I tried to upgrade 4.2.4.1 over an older 4.x version. I guess the adage "if it ain't broke, don't fix it" rules here, but the temptation is there.