Could Spam Analysis significantly lower domain authority?

[MattCommonBond]

I use Open Site Explorer to track my site's rankings weekly, and during the first week of June, we found that our domain authority had dropped 5 points after several months of being higher than that score. The only thing that was significantly different, in our business and in Moz, from the week before was the introduction of the new Spam Analysis tool. Am I right to possibly attribute the drop in domain authority to an update on Moz's end? And anyone has troubleshooting advice otherwise, I'd be all ears. Thanks!

[jmorehouse]

Lots of people seem to be experiencing a drop in DA recently. Rand addresses it here: http://moz.com/community/q/big-drop-in-domain-authority#reply_299907

[MattCommonBond]

Thank you for pointing me to that resource – it tallies with our experience on root domains, etc., as well.