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Issues scanning Boot Camp partition. Mac locks up requiring it to be forcefully shutdown. Is this a know issue.
Regards.
the official Sophos comment is here
http://openforum.sophos.com/t5/Sophos-Anti-Virus-for-Mac-Home/Advice-experiencing-slow-down-when-scanning/td-p/224
might be easier than wading through a long set of posts.