[MonetDB-users] COPY TO corrupting data

I am trying to load about 500M rows into a table with about 160 columns:

column types: 7 columns of type "int" 2 columns of type "varchar(20)" 6 columns of type "varchar(10)" 1 columns of type "varchar(15)" 144 columns of type "real"

on a system with 16 GB RAM , 64 bit windows server 2003 SP2.

it takes some 20 hours to load the 100M rows, but when I reach that boundary, the server seems to crash and database becomes corrupt so that about 95M rows have 0 in numeric columns, blanks in varchars. The remaining 5M rows have real data.

does anyone have any suggestions on what can be done to make it possible to load this data?