Install Date suddenly changed for CCleaner

CCleaner for Windows CCleaner Windows Bug Reporting
1

I recently installed CCleaner to my Toshiba Satellite Pro laptop and ran a cleaner and registry cleaner (Picked up about 300 things and corrected all of them. Backed up too.) On 9/15/2012 at night and today i checked Control Panel and CCleaner itself and it said CCleaner was installed on 8/22/2012 at 9 AM.

Should I be worried that something went wrong? Or is this some bug? Is it a virus? I ran MSE and nothing came up.

2

Is this the FIRST time you installed CCleaner? If you installed it prior, perhaps it was treated like an upgrade, else retained old install dates.

Alternatively, if you were playing with the time/date or using a program that was, it may cause incorrect time stamps.