No problem Bob,
Would your forum be a sort of extension to your website? Although the potential is always there for libel, on the face of it I can't really see where/how you could run into problems. I just read a thread on the SMF Community forum after putting 'libel' into the search box, and it featured someone who ran a medical problem forum. There was naming and shaming of Drs occuring when the owner tried to widen the discussion, rather than trying to forge better links with Drs. They had to issue a change to the rules banning naming/shaming with non-compliance resulting in instant, permanent ban. That was three years ago.
I have a Yahoo Group for a medical condition. It is not for Dr bashing (it does no good to alienate) but to raise awareness. I moderate newbies too. I should say that it gets few visitors, unfortunately, but little flurries of activity every now and then.
Did you install an instance of SMF into a folder on your webspace from CPanel? If so you should be able to find it easily.
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o2 Broadband Standard, Type 1 o2 router, Avast Home 4.8, Comodo firewall (since 14 Sept 08)