Facebook comment problem in wordpress site.

[hoangvu]

Hi,
I have replaced default wordpress commenting with "facebook comments by Fat Panda" plug in. The plug in performs just excellent, but the problem is,content get removed after 1 to two several weeks. They just go to trash automatically. I don't know what's causing this problem.
The plug ins that could interfere with this, I think, are Akismet (most possibly) and Stop Spammer's Registration(less likely).
Any suggestion? Has anyone encountered same problem?

Thanks.