I removed all languages using CCleaner, and it hasn't broken anything on my Imac that I can see.
Who said it can break the OS? Source and evidence, and does it occur universally or only in some cases, if so, why in some cases and not universally?
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I noticed something very intresting when I installed MacKeeper. I installed it and realised fairly quickly that MacKeeper is not something I should have on my iMac, so I decided to reboot into my Carbon Copy Cloner partition that was on my USB Hard drive, that was connected to my Imac, and when I rebooted into the CCC Clone, it had MacKeeper on it as well!!!!!
So MacKeeper must have recognised the CCC clone attached to my Imac and copied itself across to the CCC clone copy!!!!