I am running Windows XP SP3 and have Firefox 3.5.2. Today, I installed the latest version of Ccleaner--2.23.993 from filehippo. It seems to run fine(a bit faster actually), except for one thing. After I had closed Firefox and all other programs, I decided to run Ccleaner. I had done the clear data(cookies, temp, history, etc) from firefox and had clear the cookies from the normal IE options, right before running Ccleaner to finish the clean.
Anyway, when I ran this newest Ccleaner version, I ran the Analyze, then ran the cleaner and it said it had deleted everything. However, when I ran Analyze again it picked up some Firefox tempfiles or cookie files(17 it said), that were somehow taking up 0kb(?) or something. So, I ran cleaner again to try to clean it and it said it did. I ran Analyze again after that and it was still there, ran cleaner, etc etc and it said it was still there each time. I also checked in the Advanced->cookies tab and it had a list of cookies that had not been deleted, according to it. It seems like a small bug in this new version, but it may just be something on my side as well.
OS: Windows XP Home SP3
Browser(s): Firefox 3.5.2(the issue) and IE8
Ccleaner: 2.23.993(All boxes checked to be cleaned, except for the clear free space)