In "Hunting the Ten Square" in the May 2004 Word Ways, Rex Gooch mentions that Graham Toal recently succeeded in constructing by computer ten-squares based on 592,361 words drawn from various European languages. For the record, here are the two squares that he referred to.
Eckler, A. Ross
"The Polyglot Ten-Square,"
Word Ways: Vol. 37
, Article 14.
Available at: http://digitalcommons.butler.edu/wordways/vol37/iss3/14