22 August 2009 at 12:09pm
What is the broken image's path? Is it trying to use the gravatar url? If you disable looking for gravatars then does it display correctly?. You might like to open a ticket on open.silverstripe.com to track this issue.
26 August 2009 at 11:04pm
I posted a possible fix at the link above.
On the ticket, I meant to say line 250 on ForumRole.php.
I don't claim to know what I'm doing, so someone should verify the solution works and is the best solution. :-)