Feeling bad because I use this since many many years and I’ve never done a review for this jewel:

It’s still the best of all the all-purpose utilities out there. Five stars, minimum.

Why? It’s regularly updated, it’s reliable, it has a startup script, it has no silly-fancy GUI, it does everything you need for maintenance/troubleshooting and more.

I found a contradiction in the description and requirements. In the Des. it says for PPC and Intel, yet in the requirements it says Intel only. So you need to clarify that. Right now I am running 6.0.3 on my G5 with no problem. I am DLing 6.0.5 to see what happens. Will write back with what I find, End of Line...

Big yawn, and a frown. Don't bother. Window type face too tiny to read well. Maybe 4 point.

First I want to take my hat off to the programmer of LCC. I was really surprised when I saw that he still is writing it as a fat binary. While all other utility writers are switching to Intel only, he is still being loyal to the PPC users as well and why not, it also means more people to use it. I have used this program when it was called JCC and gave it fantastic reviews then! As it evolved this is one diamond that has increased in value over the years. A new user may not see the true power of LCC if they just look at the window. The true power is in the menus. If you are new to LCC, take some time and READ the manual on it so you know what it can do. This is one of the most powerful utilities out there to solve so many Mac problems. This is not a tweaker program. It is designed to help fix common problems that occur on your Mac. There is two items I would like to see added to LCC, the ability to turn on the debugger software at start-up and for other apps. Only MacPilot offers that and I am not a big fan of MP because it has caused major problems for me where my right side menus would not load at all and I would have to finally have to do a system up-date to solve it. The Archive up-date would just carry the bug over with it. One other ability that would be nice if you could choose the volume you want to work on as well.

Anyhow, if you take the time to study the menus of LCC You will quickly discover how powerful this tool is. Like I said before the only thing missing is the ability to tun on debugging options for different apps and the ability to choose the volume to work on. If I was to recommend any non commercial sw this is one that you should have as one of your tools. I just hope that my current serial number works because due to financial problems due to my health I do not know if I can pay for another upgrade. If you want a tool that does what some commercial tools cannot do, then this is the on to go with. Just remember this is not a tool to tweak your Mac with, it is a powerful tool to fix your Mac. End of Line...

Please note that Lion Cache Cleaner requires a $6.99 upgrade fee for previous licensed owners of Snow Leopard Cache Cleaner.

I'm not clear about what conditions under which some people are seeing SLCC slow down their Mac, eat processor time, etc. If this is happening while the SLCC app itself is performing certain tasks, it's normal for anything (including issuing commands directly in Terminal) that executes some of these tasks, to eat up a lot of processor time, memory, etc. Are some people finding that SLCC is using more resources while performing some tasks, than some other methods of executing those tasks? Are some people setting up SLCC to tell OS X to perform background tasks of various kinds, and that's what's eating the resources? Same often applies there. I just checked my Login Items, and I don't see anything there related to SLCC, though I seem to recall SLCC has options to do that (correct me if I'm wrong)--have people experiencing problems, removed these SLCC-installed Login Items to see if there's any improvement?

Since updating to the newest version, running permissions repair causes my fan to work overtime.
Have used it for years and this is the first time this has happened.

When you select ClamX(in LCC) to virus scan your download folder
the scan says "scanning internet system plugins folder", "checking widgets for viruses" and "checking desktop for viruses" but there's no indication that one's download folder is being scanned, so I guess download folder isn't, in fact, being scanned.
Same issue in the previous version of LCC.
No big deal, though; I've installed ClamX app itself and use that for my scanning needs. It will scan the download folder without issue.
Other than that, LCC is really fine.

I tried Leopard Cache Cleaner 4.0.2 with 10.5.1. I reviewed the documentation and did not have any applications open other than Safari when I used LCC 4.0.2. I have a 2.16 Ghz MacBook with 2GB of Ram. I was very disappointed as after I chose Optimize System - Optimize Files, I had at least eight applications completed deleted including Mail, Quicktime 7.3, TextEdit and several other applications, three which were in the dock and changed to the application icon with the black question mark. The common symptom I observed that may be helpful to the developers were all eight of the applications, and also files associated with the "Recent" use, were the files/applications deleted. Fortunately I had backups of all applications and all but one of the files.

The LCC 4.0.1 update seems to have fixed the no-loading problem with OS 10.5.1, at least for me.