Not frustrated, but overwhelmed at times. I think the schools need to understand what hiring an adjunct, versus a full time instructor means. Of late the constant changes and [almost] daily "new" things to follow can be difficult to keep track of. As well, many schools underestimate the time it takes to grade and time to get all the moving parts working. Even though my classes are standardized, I add a great deal of my own touches - I have considered no longer doing so due to the time involved (and having it rarely appreciated by the schools themselves) but I like giving a bit more.
In one school they estimate that it will take 2-3 hours to grade, however I am still trying to figure out how you can have unique grading for over 50 students, two assignments weekly, in under 3 hours - it takes me approximately 15 minutes per assignment, per student [to read, construct, proof and finalize feedback] which would be 15 * 2 * 30 (lets say not everyone does their work) which is 900 minutes or 15 hours of grading per class. Add that to 1-3 hours daily to respond to emails, get in discussion boards, post announcements, etc (I rarely take off more than one day a week, if I do) at the average that is an added 14 hours a week, for a total of 29 hours a week in one class. If I attempt to teach 4 classes so I can live on the wage, that is 116 hours a week at work. Leaving me 52 hours for the week to sleep, eat, shower, have a life. Wow...I might have just convinced myself again it may be time to get a job at McDonald's. lol
Sorry, as you can see this is a hot button. :-)