anyone know how to clear this "Mal/HTMLGen-A"

If it's flagged as mal HTML gen A then if either does have, or had at one point, malware (some kind of malware - that's the detection name for 'something found').

You can submit a reassessment and SophosLabs will recheck the site and clear the detection if it comes back clean - stops the need to switch off Web Protection and perhaps forget to enable it again.

http://www.sophos.com/en-us/support/knowledgebase/119440.aspx

If it's flagged as mal HTML gen A then if either does have, or had at one point, malware (some kind of malware - that's the detection name for 'something found').

You can submit a reassessment and SophosLabs will recheck the site and clear the detection if it comes back clean - stops the need to switch off Web Protection and perhaps forget to enable it again.

http://www.sophos.com/en-us/support/knowledgebase/119440.aspx