sorry no help but similar stuff,
not strictly related as working with DV (but are BM drivers up to scratch??)
machine setup; intel quad 2.4ghz, ati radeon 1950, 4gb ram, Black Magic Intensity Pro ,xp pro, prem CS3
am only working with DV but one thing have noticed is that using black magic dv preset mean that 3 effects or 2 heavy duty ones means playbak stops after 1.5 secs, hit ‘spacebar’, start again-playback stops after 1.5secs and so on if I use Standard dv preset for premiere project (ie not BM presets) then can put 5-7 effects on premiere, it may slow down to 10-15 fps playback but does not come to a stop!
All drivers up to date, seriously cooled machine, have tried complete re-install of everything- still same problem.
Weird thing is, doesnt happen in after effects
Is anyone running CS3 and this card on xp64bit or vista64bit and are you having problems at all?
is anyone else having this problem with xp32bit