CCleaner to wipe free space erratic behavior

I have been using CCleaner for about a year. When I used it to wipe free space it took about 90 minutes to do a simple overwrite and continuously gave percentage of time remaining to complete the task.

Recently , however ,I noticed two things:

It doesn't give an accurate estimate of time left to completely wipe the free space(the time remaining jumps around)

and when I look at % completion it goes to 80% to 90% and after 100% it starts all over and goes to 5%, 10% , etc.

I have to cancel the disk wipe manually or it might never stop

You need to give more info:

* Windows OS

* CCleaner version

I'm sorry

Windows 7 home premium OS with dual core Pentium

CCleaner v 4.09.4471(64 bit)

Do you still have the same problem with the latest Ccleaner version 4.10?

I have not downloaded 4.10 yet

I have not downloaded 4.10 yet

Once you have let us know if it still has the issue

I have downloaded 4.10 and it works fine.Thanks

Thanks