Word 2007 indent issue

Hello,

I'm having trouble with a Word document where the third lines is automatically indented but when I look in the Paragraphs section it says "none" under Indentation > Special. There is also a zero next Left under the same section.

I can't see an obvious solution. I've looked under Word Options and unchecked the Set Left- and first-ident with tabs and backspaces under Proofing > Auto Format As You Type but that doesn't seem to help.

Has anyone got a solution?

FYI - I'm using mail merge. The same issue exists in the mail merge template.

Fiona