PerfectDisk has three entries in services.msc, which are (at least on my machine) all set to automatic and started. I also believe that "PerfectDisk's taskscheduler services" is needed or else PerfectDisk won't work. P.S.: Want a free,legal FULL version of the latest PerfectDisk (version7)? Buy the German computermagazine CHIP (issue 03/2005), which has the full English version on the included CD Look here: www.chip.de