Sally, I think the reason for so many so called designers making mistakes is that they don't send enough items to the printers with the modern laser it is so easy just to use that and they seldom think in CMYK and the separate plates, and with Illy since the intro of CS I find it difficult to make mistakes since you get such a comprehensive report in the printing dialogue in both RGB and CMYK and thats before any preflight.

Don't complain too much about setting up for large sheet printing thats what keep you in a job and as for spot colours thats money in the printers pocket for nothing. Mind you I find hard to believe that folk send you items to be printed and its not even on the Art Board, now that is silly.

I hope tthis forum takes off as Illustrator World at the moment is so limitted so therefore few folk are using it.