May take longer with older/slower computers. The only thing I’ve noticed is that the last 2 or 3 releases of CCleaner take about 10 seconds to start after clicking the CCleaner icon if you use a firewall to block CCleaner from accessing the Internet. Worked OK with Windbefore I did a clean install of 2004 about a week ago. I’m running the latest version of CCleaner Free () in Windand it runs fine.