I'm running Opera 10.1, and when I used the new version of CCleaner it wiped all my favicons.
It's bad enough taking care I don't install the pestilential Yahoo toolbar inadvertently when I install an update, but there's no way I can use CCleaner if it's going to do this. Which is a shame because I genuinely appreciate the product.
In the meantime, could you at least indicate what option to switch off to avoid this happening again?