Thanks!
Using: -k phatk DEVICE=0 VECTORS BFI_INT FASTLOOP=false WORKSIZE=256 AGGRESSION=13 on a single 5830 and get 312MH/sec

What driver / os / sdk?
w7 ultimate 64bits
catalyst 11.5
sdk 2.2
it used to work fie ( 3 days ). then i started having these problem, i have a pc next to me with same softs and bat and it works just fine
to momentarily fix it i have to close it and open up again, it will run fine till i get the same problem (5-45mins)
Catalyst 11.5 comes with stream, so do not install it separately. Uninstall both. Reboot. Clean out ATI/AMD directories as applicable and then install the 11.5 drivers only.
I assume that your card is not over heating, the system and card is getting enough power [good PSU with enough steady power] and that you aren't overclocking it [or underclocking it ... like the memory clock] and you haven't touched any voltages? You have been watching the temperature? Proper ventilation in your case (you have good air flow). If you can't answer these questions ... install MSI Afterburner for some help

first of all thxs for a proper answer
second:
good temps dont go above 70º with oc. with or without oc i got this problem.
600w psu, satellite, its argentinian , dont think you klnow it but its good enough to have 2*5850.
i will un install and reboot and see what happens
