@marc: you’re entering the ‘sort’ field as ‘title’ when you should sort them by ‘_date’. Use this:
$asides = miniblog_return_entries(5, 0, '', '_date');
@marchal: while I can’t click those links (no link), your error can be solved by the new parameter I added in 0.5. What’s happening is the technotag plugin is probably inserting things using the_content’s filters. By default, miniblog passes the main content description through this filter. It can be turned off, though, so check the documentation.
For example:
miniblog_list_entries('<li><strong>', '</strong><br /><blockquote>', '</blockquote></li>', '', 10, 0, '_date', FALSE);
would probably fix the problem.