Just checked, using latest version on Windows 7 Home Premium 64-bit SP1 iNTEL CORE I7-2670QM CPU @2.20GHz, 6.0GB RAM, intel HD graphics family
I use firefox ONLY, have never used IE since buying the computer 4 years ago. I have run CCleaner for years and recommended it to many clients. I run it at least once a day, often more. It's now taking over 60 seconds, and where it hangs is "IE cookies". If I turn that off, it's fast. If it's on, and I haven't run it for several hours, it takes FOR EVER. I'm not running a huge load on here, I shut off everything before running Ccleaner. Mostly I'm using old Microsoft office and new firefox, with updated java and adobe plugins.