Using latest catalyst drivers with 2.4 on 5830 @974/298 with AGGRESSION=12 BFI_INT VECTORS FASTLOOP=false:

poclbm: 290 Mhash/s
phatk: 301Mhash/s

Nice work!

Edit: Tweaked memory clock - seems to peak around 335Mhz at 302.5 Mhash/s.