I can't figure out why this is happening... a few of the entries on my table
of contents are showing up twice, and they're definitely not in my document
twice. It's only happening at the TOC1 level and TOC2, 3, etc headings are
only appearing after the second entry. Here's an example:

1. introduction
2. stuff
2. stuff
a. blah
b. blah 2
3. even more stuff
4. more and more
4. more and more
a. stuff
b. stuff 2
c. stuff 3
5. end

Any help would be greatly appreciated.

Thanks

Sara