My thanks to Cubsur (http://www.algarvebus.info) for this latest important late breaking information.
The DAMAS/EVA bus service between Seville,Spain and Faro, Albufeira and Lagos in the Algarve Region of Portugal will not operate on Saturdays, Sundays and Public Holiday's between 12th October 2009 and 31st May 2010, according to the EVA website here. (http://www.eva-bus.com)
The only daily bus service at weekends between the Algarve and Seville will be the alsa.es bus from Lisbon Sete Rios to Seville via Faro bus station:
Faro Dept: 01:45 (Portuguese Time)
Seville Arr: 05:45 (Spanish Time)
Seville Arr: 23:59 (Spanish Time)
Faro Dept: 01:45 (Portuguese Time)
