I believe this MOD is causing problems with Google's spider. I logged into Webmaster Tools and noticed I had 14,000 'Not followed' errors within my /forum section of the website. Just about all of them said 'Redirect URL too long'
More information on this error here:
http://www.google.com/support/webmas...n&answer=35156
I think this is due to the plugin tracking via sessions. right?