New hosptial computer systems pull nurses away from patient care

So, I see most of you liked it once the kinks were worked out. What systems did you use?? What was pt/nurse ratios during computer rollout??
Did you go completely live or just piece by piece? What if your unit was unstable---not enough regular staff, hi acuity patients, too many travelers/agency??
Pros apparently come down the line but cons seem to be at the beginning if things are not organzied right???
So far it seems that 12 hours instruction are not enough at my facility, not enough super users, too hi acuity patients, massive OT, nurses not able to get out on time, etc. All at the Holiday season when people just want to go home. System too complicated. Have not even started MD order entry or pharmacy yet. Docs not trained, asking nurses to help them too often and they cannot get their own charting done.