I have had two people comment that their browsers flag my blog as an attack site or virus site.
Ignore that.
I have javascripts running on my site which could be the cause. Also, I link to Zenit.org which has also been flagged. They have said that they believe these warnings were caused by scripts used to run their banner ads.
If you never had a technical problem with my blogs before, then fear not you will not be exposing your computer to any harm.