> Could somebody please tell me what the differences between FB 1.5.1
> and 1.5.2 is ? (I did read the release notes but the differences
> wasn't clear for me)
>

1.5.2 contains a few bug fixes and 1 or 2 performance improvements
(mainly things broken by 1.5.1). Nothing too exciting, obviously you
should check whether the bug fixes could improve performance or correct
any bad behaviour on your system. There was nothing significant enough
for us to force a rollout for existing 1.5.1 installs, but moving
forward we are on 1.5.2

Adam