Hi there. Sorry to hear about your trouble with the hound fight. :-/
In pursuit of tracking down the problem, I was wondering if you can recall any specifics about what happened? Was the problem that scanning the machine just had no effect until one of the hounds had died three more times, or were there other elements of the fight or environment that were behaving strangely? Did the hounds keep attacking you? Did Taimi say anything while the fight was bugged? Do you remember what your quest steps were? Do you remember whether the first hound you killed was Tegon (stays at range and occasionally charges) or Temar (plods toward you and puts down AoEs)?
Anything you can remember would be helpful in trying to narrow down what could have caused the hound fight to glitch for you.