1. A media processing system arranged to process image receiving media under predetermined physical conditions, the system comprising: a scheduler arranged to schedule jobs to be processed from input bins in the system, to calculate first predicted timings (T0) at which media will have to be ready for processing and to indicate the first predicted timings on a user interface; a buffer in which a supply of media that has been received from a first environment is kept in a specified second environment before being processed, wherein the buffer is distinct from the input bins and comprises a local media store from which the media are to be transferred to a media input section from which the media will be supplied for being processed, and wherein the scheduler is configured to calculate an acclimatization time required for the media to acquire said predetermined physical conditions by being kept in the second environment in the buffer, and to calculate and indicate a second predicted timing (T1) as to prompt a user at which time the media should be present in the sheet buffer in view of the calculated acclimatization time.