Opening a list of open invoice, or other lists, are very slow even on dual 1GHz G4s. Very unforgiving if I make a mistake on entry, and won't let me make changes easily. I guess they make a lousy, slow and hard to use software, so you get to call them for technical support. And they charge you for an arma and a leg, and stil couldn't get the matter resolved. And they keep asking the same question three times on what the problem is, dragging the support call. Should have written down the problem at the beginning of the call.