There were beta's that have been problematic. You upgrade and discover that prescriptions won't print write, or that prescriptions are not correlating with the certified versions and now you have to spend more time to write, say prescriptions. Sure it's only a couple seconds but after 30 or so prescriptions, that time adds up. AND YOU ARE NOT GETTING PAID. This is for the greater good.
No belly aching here, I like to work on beta's and accept their inherent risks.
I spent an hour with AC Central with early V6 with the speed issue. I wound up replacing 4 computers with dual cores somewhat faster than anticipated. All this was before a fix was figured out. But 6.0.4 was so DOG SLOW that I could not function and I was not going to go backward (I thought about it though.) I did discover that having logmein logged in would allow me to function better. Crazy work arounds. That was about as bad as it gets.