Ditto Using A Lot Of CPU?  Fans Run Often

It seems to be the culprit in causing the fans to run fast since installing SL. I stop the process from the Activity Monitor but it starts back. AM shows ditto at 90% when it's running. The fans come on, I stop ditto and they slow down, later the fans come on again, I check and ditto is running again and at 90%...............

Actually resolved this. Related to unzip issue.
Attempting to unzip some files locks up the Archive Utility. Force Quitting the Archive Utility leaves ditto open and using a lot of CPU.
Therefore, I'm using The Unarchiver (as kindly suggested by someone on my unzip problem post) at least until Apple updates the Archive Utility.

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