PrimeGrid just posted some ati clients onto their PPS(Sieve) sub-project.
corrected link --> http://www.primegrid.com/forum_thread.php?id=2799
So far they are getting "No work for application" but that is an improvement in itself ;)
The problem has been posted in the thread above and hopefully someone will report it as being fixed soon.
I have attached 3 x HD5770
Are you ready?