this is something that came up before, but apparently the problem still exists. See: http://support.seedmediagroup.com/researchblogging/search.php?PostBackAction=Search&Keywords=LifeType&Type=Comments&btnSubmit=Search
We are using LifeType and the aggregator doesn't pick up new posts. The problem is rather new, since it worked around the time the german aggregator started. We tried messing wiith the code, but there seems to be no problem there.
I think we've discovered the problem and solved it in your case. We'll soon be posting a set of instructions for others facing the same issue. The key is that if you're using the "Bad Behavior" plugin, you need to whitelist researchblogging.org.