I just installed Win7-64bit in a Boot Camp partition on a MacPro. Installed the latest ESS via Live Installer. Everything seemed fine until I went to install something via the optical drive. After the CD spun up, nothing; then it spun down. The system then became unresponsive. I could not eject the CD. Crtrl-alt-del did not work. I had to power down. After starting up I ejected the CD. The system was fine until I put in a different CD, then it became unresponsive again. Using msconfig I isolated it to the Eset service. Multiple startups with the Eset service disabled proved the issue was gone. I tried to repair the installation of ESS but that failed when it could not locate an .msi file. I uninstalled ESS. Confirmed the issue was eliminated using multiple CD/DVD's, reboots, and thought it was a corrupted install. Installed again via Live Install and bingo, same issue. I tried temporarily disabling the Removable Media protection and that did not work. I have once again uninstalled ESS and I have installed my other software via the optical drive without issue. I would like to install ESS but want to know how to handle this issue. I appreciate any help.