Sorry - think i may have confused the issue there.
I deleted the fonts manually outside of CCleaner.
The SnowLeopard installation activated 7,000 fonts on my machine - which ground photoshop to a standstill.
So i deactivated them all (not the system fonts) and started reactivating just those that i know i use.
After that procedure though CCleaner lost interest in launching and just crashes on start-up.