Thanks again: make ps now works fine, and settin LD_LIBRARY_PATH solved problems on both linux and alpha machines. John -- Prof. J. E. Cremona | University of Nottingham | Tel.: +44-115-9514920 School of Mathematical Sciences | Fax: +44-115-9514951 University Park | Email: John.Cremona at nottingham.ac.uk Nottingham NG7 2RD, UK |