Hi List,
I think I've found a little bug in org-export-as-html function in org-html.el file.
If you're setting an title with some escape character then the title tag in html header is set "as is".
for example if your title is foo\_bar then the title tag will be <title>foo\_bar</title> instead of <title>foo_bar</title>
I tried to do the job in the attached patch.
Hope this could help.
Pierre