Thanks Dan.
I believe Google is just reacting late to the hack from last weekend.
I did a global update to all my sites last week.
I have just downloaded all the public content from the server to my computer and no file reports infection anymore.
I will contact Google about it... next Monday, again weekends in the middle.
Pleas in the meantime just ignore the warnings. It is safe... for now.
Peter Holmquist