<?xml version="1.0" encoding='utf-8'?>
<comment id='2640' jitemid='594' posterid='209486' parentid='4622'>
<body>example example example</body>
<comment id='2641' jitemid='596' posterid='401344'>
<subject>example example example</subject>
<body>example example example example</body>
The stream ends without a closing </comments> tag and without a closing </livejournal> tag, and about halfway between what is typically a 1000 comment export.
If there's any other relevant information I can supply (such as the username this is occurring with, and this last comment ID that is printed before the export cuts off), and also if there's a more appropriate place to post this, please let me know.