We use it at work, yeah ... frankly not impressed with it to be honest. It's crap for preparing web graphics as it doesn't remember slice names or settings.
After first claiming that they couldn't recreate the problem, Adobe have now confirmed to us that they consider it a bug that will be fixed 'in a future version'. Great - how about a ******* patch in the meantime Adobe? Save for Web worked fine in Illustrator CS2 after all ...
That little rant aside, I'll help if I can ...