I'm sure this has been suggested before, but I'm short on time. Sorry.
I use CCleaner about once every one to two weeks, and it seems every time I start it, there's an update that requires me to re-download the software.
How about we remove the middle man and just include an automatic update feature so all I'd have to do is click "Update" and a quick restart to the program?
(This also applies to Defraggler, though it's updated less frequently)
This is not a complaint at all. I love what you people at Piriform are doing. This is just a suggestion of convenience.