I'm not happy...
D. EMPLOYMENT PREFERENCE VISA AVAILABILTIY
"Many of the Employment preference cut-off dates have advanced for the month of December. This is being done based on the amount of demand currently being received from Citizenship and Immigration Services (CIS) for adjustment of status cases, and consideration for CIS’s processing procedures and staffing patterns. Applicant demand for numbers may be expected to increase following rapid advances in the cut-off dates. This could cause cut-off date movement to be sporadic, and eventually slow or stop later in the fiscal year. At this time, it is not possible to predict the rate of movement in future months."
PD: Sept 2002